looks like a decent lineup! i have yet to take a professionally trained course. i am sure that i would enjoy it, as i have always been of the mindset that i need to improve. my biggest fear is having the first instructor being one of the really bad ones, and me not knowing enough to realize it.
I highly recommend that you do so. I can give you many recommendations based on your current skill level, what you want to learn, where you live, and how much time and money you have to spend.
A quick list of who I've trained with that I recommend:
Front Sight... Handgun. Yes, really. The training was solid. I ignored everything else.
SigSauer Academy - certain instructors. Handgun and AR, and Krav Maga.
Tactical Response - Handgun and AR
Trident Concepts - Jeff Gonzales. Handgun and AR
Weaponcraft - AR
Plus the four I highlighted in my first post.