Which irons should i buy / do you guys like?

okay im about a 15 handicap, alot of pars alot of bogeys, very few birdies and once in a while a 7 or even 8. i know they are all good products and mostly a matter of personal feel/choice. but i am wondering which iron set you guys like or which you think i would like. 1) callaway diablo edge, 2) cobra s2, 3) taylormade burner 09's, 4) nike VR full cavity (or sq machspeed)??? 5) adams a7, or 6) ping g15. thanks guys, i appreciate it.