I’m very happy with my Ultimaker 2, good community behind it and a solid machine the 2+ would be a great machine. I’ve also got the chance to use the MarkOne and I have to say it’s a really solid printer all around. I’ve also heard and seen good things out of the Taz.
There are two we like. First is the MendelMax 3 by Maker’s Tool Works. It’s great DIY project. They ship you all the parts and you build it yourself. It’s a little cheaper than some of the others and works with most filaments even specialized ones.
The other one we like is the Taz 6 by Lutzbot. It’s a great 3d printer.
The Lulzbot TAZ 5 has been a really good fit for team BLRS, so I would personally advocate for that as a good option. The TAZ 6 appears to have a number of really solid looking upgrades from the TAZ 5, but I have no experience with that version outside of seeing a few examples of prints from a TAZ 6 belonging to a coworker of mine. Either way, Lulzbot and the TAZ series are great printers and I have been happy with the purchase.
If you’re willing to do some tinkering yourself (with software and slicing, not mechanically), the Robo3D R1 is a pretty good budget model. Very capable for a sub-$1000 machine, and a big build volume.
I go to the same school as @Anirudh1961 and am a Junior (he’s a freshman) and would like to clarify before anybody gets misinformed, we have never used any of our 3D printers to print VEX parts and so we cannot say that
I would also like to point out from experience that the MakerBot Replicator 2x has not been the most reliable 3D printer as it jams frequently and takes a long time to print. We have recently acquired a LulzBot Mini which has met our expectations and has been very reliable in the past month since we got it. However, unlike the MakerBot Replicator 2x, the LulzBot Mini lacks a casing to protect the print so you would have to be more careful around it.
I’ve had a Wanhao Duplicator i3 v2, a Makerbot x2, and a Ultimaker, and I have got to say the Ultimaker is amazing. But, if you aren’t looking at spending that much, try the Duplicator, I think they are coming out with a new one any time soon.