A lot of business professionals use Blackberry's or other telephone / PDA's what are your opinions on these devices? Do they work? I'm planning on upgrading here soon. I've bought probaly four PDAs in the last four years always trying to recharge myself to stay organized, digitally. My problem is though that I don't use it enough to carry it around. I don't sync it daily and I"m not religious enough in the use of it to make it work for me. I was thinking though that if it's tied into my cell phone I couldn't be without it.