Adriana, let's go back to your basic task at hand: You are researching a start in a training program. IOW you are a shopper, a 'consumer'. And the hard part of this is that you are shopping in a marketplace that's fairly foreign to you. You'll make some very formative decisions (school, instructor, type of a/c in which you'll be instructed, type of airspace you'll fly in/out of) and only later be able to appreciate how influential they were in your training experience. That makes you a member of a big club, as that's true for almost everyone except kids who grow up in flying families before starting to train.
Given all that, I think a recent research study that would help you be a much better informed shopper is this one done by AOPA:
http://download.aopa.org/epilot/2011/AO ... rience.pdf
You might be blown away to learn how very few entry-level student pilots actually earn a license. And it's also discouraging to learn how inactive newly licensed pilots become after only a short period of time. The reasons for both these realities lies, in part, to those early, formative but fateful decisions they made.
I got my PPL and did my IR at KSPG, so I'm familiar with what it's like as a training field. It's a good choice, and also a fun one given the 3 over-water approaches, the 'downtown scene' and the availability of good training areas nearby. While I was there - and I still occasionally fly in there - Bay Air was never 'the' place to go for PPL instruction, so I'd definitely encourage you to shop around. PIE is an initially more imposing airport - it's a Class C airspace vs. Whitted's Class D and has the largest USCG air base in the U.S. - but training out of that airport isn't fundamentally different than KSPG. A big plus IMO of both locations is that you, by necessity, will have to get comfortable with voice comms, controlled airspace, a Mode C veil (meaning your a/c is being monitored by Tampa's Approach Control and you have flight following available to you in that busy airspace when you come & go). I've been told in posts here that Peter O'Knight offers a good SPL curriculum and it's not hard to reach from the St. Pete area, especially if you are near I-275, so I'd include that in my search if I were you. And finally, I would put the availability of multiple LSA rental a/c at the top of my list of concrete shopping criteria, even if you must access them via several individual airports, before I chose the SPL route. It is simply a terrible waste and an unsafe circumstance to earn a license and then not fly regularly...and if you must share one or two LSA's with student pilots and other renters AND allow those a/c their maintenance downtime, availability will have a choke hold on you enjoying the license you worked so hard to earn.
Again, good luck to you!