Maybe I am a little bias being a DEV for the phone. I like the Triumph, its a solid phone and also my first Android Phone I ever owned. Prior to using Android I always had company provided phones using Windows Mobile or Blackberry. But lets talk Triumph.
CONS
-The hard buttons freak out from time to time (rotating the phone usually fixes it)
-HDMI only works on Froyo based ROM's if you root and flash
-GPS is not the best but it's gotten a lot better on Bsydz Froyo and some updates we have done on CM7/CM9
-Audio some times fades out with notifications or is a little lower than some users likes while using headphones.
PROS
You have a solid team of developers still working on the phone through
Team MTDEV and a
website to boot and fast
download area (Maybe slow for pages to load due to md5 generated script I wrote but downloads rock with no sign up). We have CM7, CM9, and CM10 out for use and also a work in progress Gingerbread just no 3g/mms/sms as of yet but does have HDMI.
CM7 our rock, and flag ship and also best ROM we Triumph users have that is built from source. Everything working except for HDMI and also some video flicker issues in portrait.
CM9 still doesn't have a working camera as of yet, but I just fixed netflix and hulu playback this last week. It's a solid ROM but not completed yet, and still needs work.
CM10 still in Alpha but is a good show in tell of what is to come.
Jellybean? Well if Motorola follows through based on their
Key Notes this will be the only phone on the Virgin Mobile network with Jelly Bean. What this means is more solid working ROMS Phandroid, Miui ICS, CM10, etc. However there is no guaranty this will come.
It's all up to you in the end but for the price it's a solid phone, may not be the best of the best but I have been very happy with the device as many users have been as well.