So I have a thingomatic by maker bot and it is ok.  I know the msft garage is going to get a make bot replicator and an Up 3d printer.

A lot of them are based on a reprap design as well.

I suggest checking out the software and how much tweaking you want to do to get it to print.  If your area has a makertareq like seattle's create matrix or tech shop, check those out as well?

Print bed size is another big thing.  I wish mine had a bigger bed almost right away.

Making the thing omatic was chances are one of the most confusing things ever.  Just put that in context with some of the things I have built Smiley. Took 2 days and chances are another 5 to get everything adjusted