IMHO, the zenbot appears WORLDS more sturdy than the wright cnc. The lowrider option looks like a great toy, the concerns with it are too numerous to mention.
I use my zenbot daily. It cuts well with a 1.5kw spindle. The results are repeatable and dead on. I did have a motor shaft break, but I think that was just bad luck and it was immediately replaced. I cut mostly mdf and melamine.
I would recommend to anyone looking to spend less than $5000. The next level up is (maybe is the chinese 1325 I think). Going up around $9k-$11k there are many options. $20k+ sky’s the limit.
Zenbot is pretty good. Great for the money.