SKYPILOT  Nice featured software. Seems to give good data. Good graphing and stats.

Auto update of stats did not work for me. I could update with the REFRESH button, but if I am paying that level of price for software it had better function as expected. The author appears to feel (per his website) that incomplete of beta software is acceptable. I would disagree. I would suggest a lower cost till the bugs are removed and then consider a cost increase. He has appeared to have issues with his HUD and now this. Just not clean enough at this time. Will see what an update brings and re-review.  
(Version 2.06)

AVEDISWOLF  This is the closest thing that compares to Poker Tracker ( Which is in the windoze world )

It keeps track of your bankroll, your played hands, flops seen, VPIP, and other stats of yourself, and players at your tables.

The HUD works as planned, but currently the on table HUD only looks right on the default theme, as the boxes are not movable. The site does say movable boxes are in the works, though.

As for the price, compare this to other products with identical features in the Windoze world. I think it's reasonable. Most folks using this will be able to improve their game and see where some weaknesses are. Depending on what limits are played, it can pay for itself easily.

It's still missing some features as its counterparts, but the author seems to listen to peoples requests on their site   
(Version 1.39)

FLASH1296  This sounds like great software; but the price is absurdly excesive.  
(Version 1.37)