I have had Storm since the day they came out, as it is a corporate phone it was a no brainer for me as well.
My 2 cents...if you are looking for a phone that just works, the Storm is the way to go, thus far for me. Blackberry's have always been rock solid performers, they are just locked down more on the software side than their competitors like I Phones or the Windows/Linux/Misc OS based touch screen phones.
So if you want to play and modify, an I Phone will probably make you happier, if you just want the phone to work without tweaking....go with a Storm...
I don't have time to play with all the different software packages that a phone like Apple made, plus I was less than thrilled at the thought of having to send it in for a new battery or tear the whole phone apart to replace it, in addition the Storm has a removable memory card so I can change them out so that I have music when I am in town and driving around, and movies when I am traveling without the time it takes to load and reload this data.