Ive been a long time fan of pokertracker. I see the software as a big brother, guiding me through the world of online poker, highlighting fish and making my life a lot easier when multitabling.
Then along came Holdem Manager.
I must say I was dubious at first but this lasted all of 10 mins. Once I worked out the differences and adjusted the layout of the HUD I instantly felt way more comfortable than I ever have with PT. Ive imported all my hand histories from PT and am now tweaking all the information I can handle in HEM.
If you havent tried this great piece of software go give the trial version a run.