I have someone local that is selling a X-Carve kit (never built, everything is still in the boxes) for around $1350 US dollars. However there is no guarantee that everything is there, and there is no guarantee that everything that is there is in good working condition. He says that the kit was purchased in October 2019, and that I can open all the boxes to make sure that everything is there (assuming the kit came with a manifest). I don’t know this person, I’ve only exchanged messages with him on kijiji.
A new OpenBuilds Lead 1010, during their Black Friday sale, wouldn’t have cost me all that much more. Boxing Day is coming up, and presumably they will have a Boxing Day sale.
When I look on youtube, and the inventables forums, I see a lot of people posting about using X-Carves, and a lot of people are upgrading their X-Carves to increase the stiffness/rigidity/etc using OpenBuilds parts. When I send email to inventables, they respond in a timely fashion, and answer my questions. I see a lot of references to the inventables excellent customer support.
When I look on youtube, and the openbuilds forums, I don’t see a lot of people posting about using their machines. However, I don’t see anyone needing to upgrade their machine to increase the stiffness/rigidity/etc. I have never gotten a response to any of the emails that I’ve sent to openbuilds. Which is why I didn’t buy a Lead 1010 during the Black Friday sale - I sent a number of emails asking various questions. (I still haven’t gotten a response to any of my emails.)
I really like how easy it seems to be to use the X-Carve. And I really like that they seem to have excellent customer support. However all these people upgrading their X-Carves using openbuild parts makes me wonder if I shouldn’t just get a Lead 1010 to start with, when they are on sale.
I can’t help you with your decision because that one is up to you.
It looks like a workbee 1010 with all the trimmings comes in about 2000 US dollars. It also appears to be lead screw driven.
I have little experience with Open Builds other than some parts I bought over the years. I started out with a Shapeoko2 and upgraded that to a 2017 X carve. Then I added a cnc4newbies Z axis and some 9mm belts and pulleys and lastly risers and stiffeners. I’m pretty happy with my X carve now.
Both machines are hobbiest grade and have a history behind them. The X carve forum has been a help to me when I had a couple issues to resolve. That’s a good resource that is worth something to add to the mix too.
Like @MartinW.Mcclary mentioned, that’s totally your choice.
I bought an xcarve exactly because of the reasons you stated (service, forum, community). I had zero knowledge about CNC and really enjoyed my journey so far. Instructions are on point and if you’re stuck there are a lot of friendly people around here ready to help.
Whether you really NEED upgrades depends in my opinion on your usage. As a hobbyist I think the xcarve is sufficient and you can do some cheap and fast modifications to make it even better. Nonetheless it has some issues (especially regarding the need of maintance regarding wheels, screws, etc…blue loctite for president).
To put it in a nutshell I’m really glad I bought one, even though I’m currently building a new CNC, based on my own design. That not a problem of the xcarve however, but fulfills my tinkering needs 
The question is: what do you want to do with your CNC?
The question is: what do you want to do with your CNC?
I have a pile of hardwood slab-wood sitting in my yard. I bought it to use as firewood, but my wife doesn’t like using slab-wood in the wood stove. So I have a large amount of raw material just sitting there, waiting to be turned into something useful. From my understanding, the X-Carve can handle hardwood but slowly, otherwise you get deflection in the rails. If I’m understanding it correctly, the OpenBuilds Lead 1010 can more easily handle hardwood and aluminum, and I do have some things that I’d like to make out of aluminum for some of my other hobbies…
Whatever I end up buying will be more for my sons (teenagers) to play with, and maybe turn into a business. My older son is already selling stuff that he makes out of wood (so far just hand carved knifes and walking sticks). I figure if my sons can turn this into a business that really makes money by the time that they graduate from high school then I might be able to save myself the cost of having to pay for a university education 
The xcarve may not be as rigid as other machines, but it is indeed capable of cutting aluminium regarding to the forum (did not do it myself yet).
Several other members are making a business out of it, though I think regarding cutting times it may be a bit too slow to have a lot of pieces per day (maybe someone can jump in with a more qualified opinion).
For learning and playing with it I do recommend the xcarve.