Andis SpeedMaster II, Wahl 5-Star Senior, Andis T-Outliner, Andis Styliner II Trimmer
I have Pro-Mate blades on my Liners
Fade Blade on the 5-Star Seniors
I hardly use my SpeedMasters any more. They were my first clippers, but they are crap compared to the 5-Star Seniors. The 5-Star Senior is great! I highly recommend them. If you don't feel like dishing out the money, though, you can get the Wahl 5-Star Magic Clip for much less. The never version has the same fade blade and same V9000 motor.
For my liners, I mostly use my T-Outliners. They get hot fast, though, so I have to pull out the Styliners sometimes. I took off the stock Andis T-Blades and replaced them with Pro-Mates. They have deeper teeth, cut much better, and don't rust.
What are your favorite tools?