Thoughts on this? Blackberry 6750: VZW: Great coverage $499. No discount. 10 megs of memory. 3 hour talk time $49.99 per month for unlimited data. Blackberry 6710: (16 megs memory, 3 hr talk time) T-Mobile: Avg-flaky coverage $399 w/ $100 rebate = $299 $40 per month for unlimited data. I want to go with VZW, but its so much more expensive! Hard time convincing the bean-counters at my company that the extra coverage is worth the extra cost. Any thoughts on the +/- of the two blackberry services?