Now if I had to pick I pick Charles! I think the group exercise concept is excellent but I think I have become spoiled and use to the one on one attention. I can cheat if no one is watching! Anytime I complain about how many reps I have to do ie., "15 REPS?!?!" whined Cylia "Ok 20 then!" *smile* says Charles lol that's what I need! Its what has worked for me. But it is good to work out in a group because you have people cheering you on and clapping for you and well its a good alternative especially if personal training is out of your budget. I mentioned Charles to two ladies at bootcamp one is getting married and said she joined this group to lose weight but would like a personal trainer for more individualized attention. I recommended Charles highly of course and hopefully they'll check him out!
So ultimately the choice is yours based on your needs, level of accountability, how you feel about working in a group, and budget! Either way its a way to be healthier and happier so try a bootcamp and see if its for you!