I used an IE 3.0 for years, but finally decided to try and find something new.
I grabbed a Razer Deathadder and a Logitech G9 thinking I'd use one or the other for gaming, and keep using the IE 3.0 for everything else. But after getting used to the higher DPI mice, the IE 3.0 felt quite sluggish on the desktop.
Both of the new mice were pretty awesome for gaming, but I couldn't get used to the extra pressure needed to click the middle(scroll wheel) button on the G9, so it got sidelined. However for text work, I loved the G9's free spinning scroll wheel. Logitech seems to be the only source of free spinning scroll wheel mice, so I tried a few more of their models.
I used a VX nano for about a month, it is very close to good enough. The small size didn't bother me at all. The only issue was the middle button being separate from the scroll wheel. I banished it to the laptop, where the small size mostly offsets the not quite perfect scroll wheel/middle button. And of course the nano's "nano" receiver is perfect for a laptop, since you can leave it plugged in 24/7 with no risk of snapping it off.
Then I tried a VX revolution, but it didn't do it for me. The middle button required too much pressure, though not as much as a G9. And it just didn't feel as nice to use as the nano.
Then I found a deal on the MX 1100, and gave it a try and I'm very happy with it. Scroll wheel nirvana at last, free spinning, with the wheel acting as the button, and not being too hard to press. And a tad more DPI than the nano.
more notes on Logitech mice:
I didn't try a MX revolution since it sounded like it's battery tech just wasn't up to par. It has a non-replaceable li-ion battery, which sounds like it only lasts a few days. And like all li-ion batteries dies after 3-5 years.
All the other Logitech wireless mice I tried, use easily replaceable AAs or AAAs, which last for months. I'm using low self discharge NiMH batteries(Sanyo Eneloops) with them, which easily last 2+ months per charge, and are trivial to swap out with freshly charged batteries when needed.
I sort of looked for a bluetooth mice as well. But I get a vibe that bluetooth has update rate and/or latency issues inherent in the protocol that make it sub-par for mouse performance. And that's probably why no "great" bluetooth mice exist.