i started with the 7105T and then I moved to a winmo, then toyed with Nokia, then back to BB 8110 again. I guess the whole thing about BB just simply works, all the apps that are avail for social media, twitter, facebook, etc, and I get my emails pushed, I can view docs on my BB easily and it is just a mobile office. I listen to music at work on my 8110, 6 out of the 8 hours that I work, and I still have some charge left! Compared to my old winmo, just drains it out, not to mention browsing and switching between apps is a breeze, you don't have to close down an app to switch to another, it's a plus, where on an older winmo you will just simply run out of RAM.
What can I say, BB Rocks my world!