Samsung SPH-i500

OK, I"m sure this topic has probably been worn out, but I'm going to ask anyway. Any thoughts on the comparison of these phones? My plan was to use it more as a phone than an organizer, but faced with the opportunity to send and receive office e-mail through the device I could see using it in that way. I have a Treo 90 and like the keyboard. I like Grafitti less, but it's a more compact phone and I like having a standard dialing pad.

Thoughts? Anybody try a Treo 600 and have thoughts about the size? Is it unwieldy?

I'll take any advice.