Jmonti:
I don't think you can get v2 from 1.x for an "upgrade" price, unless you are talking about the 35% discount that would apply. In that case (very worth it) you end up with a second license (a 1.x plus the new 2.0x license).
A disadvantage (at least for me ... this may NOT apply to you): a] the "Disk-x" naming order could change when you move to 2.0x.
Also note: just because your Mobo says it will do RAID don't assume it is
REAL hardware RAID (which is the only type supported by v2.0x) ... even if it is, check the documentation first to see if the chipset is supported. ( I am NOT a fan of RAID. )
But having said all that I would highly recommend upgrading; the advantages are numerous (as pointed out by others above), and also note you do NOT have to reformat at all, you just use the HDD from 1.x with its data as is. (But you might want to apply a "JOURNAL"

(from our other post).)

Georg