Tuners?

Two things. What is torque management? And which tuner is the best and which one is the cheapest? Actually three. I was looking at EFI live and Autotap but the website is so confusing. If I order from them what all do I need, and if a friend of mine has already bought it and has some extra licenses what all do I need to tune my own car?
Thanks
J.T.
scanner (new cable). HPTuners has both scanning / logging
and tuning capability, this is what I use. LS1-Edit has a
rudimentary scanner added to their tuning tool now. The
licensing schemes vary all over the place, I prefer the
one HPTuners uses, LS1-Edit's license blows dead rats,
EFILive's is ok for the one-car or few-car user but I see
it as too restrictive for me as I like to help people out
every once in a while and that would chew up the limited
license pack they allow. So I have added licenses to my
HPTuners cable rather than go for FlashScan.
Torque management is the PCM's application of timing retard
to cut torque, trying to protect the transmission during shifts
or just limit engine output (on drive-by-wire cars).
All of these questions have been discussed quite a bit right here,
"Search" is yer buddy.
Thanks for the reply, I have done searches but the search engine on the site pulls a bunch of stuff that doesn't have anything to do with what I am looking for. Which mainly is opinions and experience.

