Bill,
In my experience, the various trg orgs out there are, as far as flying goes, pretty much as good as each other. Ask around other companies on the phone etc... One aspect to note though is that all of them are there to make money. The smaller companies with fewer customers will see individual students as a bigger proportion of their turnover and will therefore be prepared to say whatever makes you feel good. The best advice is to see what their success rate is, speak to former students, and ask them about other students so that you don't only speak to the ones the company has directed you to. Find out how much time they were given on ground school and if the instructors were prepared to offer one to one instruction in a classroom.
Don't be shy to ask the awkward questions about what if... crash/bankruptcy etc....
Good Luck