The problem I'd guess, is that when the fragile battery dies, and you've used a hack Apple are seriously unhappy with, how do you get your battery changed? I was really looking forward to an iphone, despite not being that bothered about mobile phones, just because it did 'everything' really 'nicely' but from what I've read since it's launch, I wouldn't touch one with a barge pole now. My pocket PC died, so I am looking at getting a smart phone... looks like it will be PC compliant again, not Mac.
Keith:
I work in technology, have for years, and use Mac and PC platforms frequently and easily. You're right in questioning how these hacks will affect the warranty and such. I'd personally stay away from them (unless you have money to burn and don't care). However, In all my years of working with, rolling out, and supporting the latest and greatest, the iphone is one of the best communication devices your money can buy; for now and for the near future.
If you haven't had a chance to see or play with one, you should. Easy to navigate, intuitive,fast, smart and fun to use.
Even though I wasn't able to use mine in DR on this last trip, no biggie; We just purchased an unlocked phone at the Claro shop on the conde and kept going. I'm sure the Iphone will work in DR soon and if you're not there now, but can purchase and use it currently you won't be disappointed.
While i have heard a few people say, oh they won't buy it for this or that reason, I know of no one who purchased an Iphone and regrets it!
Go ahead, take the plunge; If you don't like it, you have 30 days to return it and purchase a, what was that again?
Good Luck
CJ