I've never been a particularly strong squatter. I think the most I got was probably 12-13reps on 90kg/200lbs at a body weight of 75kg/166lb, and that was doing back squats; I've always hated how my back and abdomen felt when I did them. I've only just started doing front squats in the last few months; I don't really feel it all that much in those 2 areas, but so much more in the legs. They're so uncomfortable, though. It took me about 3-4 weeks just to get the technique right. I never really like to go past 10 reps squatting as I always feel I'm going to pass out, and this feeling is exacerbated for me when I do front squats.