i like the low rise of them too, they look more comfortable when tom is sitting - not squashing his belly!!
I only have two SIPs but find most of the time that's all I need for the day as have bought extra snap in bits, which is all you need to change if no poop on wrap. So works out quite reasonable price wise (although I will be buying 1 more wrap come payday!!)
Tom has chunky legs so no leaks, I even had one on him over night and was fine!