Ah, Sprint Cusstomer Support. I have dealt with some truly inspired reps and I really appreciated the help they provided, but they were somewhat in the minority.
I would suggest taking full advantage of the return grace period and try both phones. If all the sure-type prophets are right, then predictive text shouldn't give you any problem if you put in a week or so of practice (I'm sure it's just like learning that stylus-stroke touchscreen input language on a PPC). After that, you'll just have to see which phone meshes with what you want to use it for.
Sprint didn't offer the 7130 when I was buying (or maybe they did and the rep was just selling his old stock
), but I haven't found any gaping holes in the usefulness of my 7250. My BB's on vibrate most of the time, so ringtones aren't an issue. Eventually they'll move EVDO coverage 60 miles to the west and I'll benefit from that, too.The full keyboard is my main love after years of touch-screen hell, so it suits me just fine. If you're worried about the larger form-factor looking silly as you hold it to your head to talk, just get a bluetooth headset (and look silly with a blue flashing light in your ear).
Rambling on is Fun!