I bought a MakerBot Replicator 2x for about $2800 a few months ago. The thing is great I love it for doing side projects and messing around building little things. If I had to do it again, I would probably stick to a single extruder (I haven't used dual colors as often as I thought I would ) and would do all ABS instead of buying spools of PLA. I did quite a few ABS builds with limited failures (mostly from the build becoming detached which is easily fixed with slurry) and then I started to try doing PLA builds and the plastic just seems to come out all weak and stringy and the finish on the top layer is very rough compared to the ABS. The only downside I've noticed to the ABS is that it smells a little bit when it's running - but it's not overpowering by any means.