I haven't ever posted here and am a mediocre recreational player, but here's my 2 cents.

I initailly got poker tracker just because I had read so many posts on various forums that it was a MUST to get. At the time I didn't even have $50 any where online (but could afford it anyway) lol.

While I'm sure I still don't know how to use it to it's full potential, what I like about it is it lets me analyze my own play. What hands am I over playing/valuing? Where are my biggest leaks?

It also lets me keep a record of my wins/losses, and I go over almost every hand after a session to see how I could possibly do something different in future situations.

Anyway FWIW I do think it's worth it. Get the trial version first and see if you like it or not.

I've recently downloaded PAHud, using the 30 day trial period for free. I think this is another VERY usful tool that I will be investing in once the month is over.