these peptides are known as secretagogues. they up regualte your body's own production of GH. some of them work well. personally, i have not used ipam or cjc, but i can speak first hand on ghrp6 and 2. they certainly made a small difference. i used them while not on gh and within a wk, i saw effects i would expect from gh. improved skin, hair, nails. the ghrp6 made me very hungry. its great in the off season when trying to add mass. i have heard good things about both ipam and cjc. personally, i would use cjc and ghrp6. that combo is supposed to work well. in fact, i plan to soon. 

now as far as "good deals from legit sources", thats where the problem lies. you have to be very careful who you buy this stuff from. as i metioned in another recent answer about igf, peps are very easy to fake and its harder to tell exactly how well they are working. i am very leary of good deals on peptides for this very reason. i would much prefer to start out looking for a great dependable source and work from there. i trust naps and he carries peps, so i beleive that he is going to go through the best channels possible. thats not to say that there arent other great sources out there. its just that i know what level of quality to expect from my guy, so if need be, i will always spend a few dollars more for that peace of mind, expecially with peptides.