So I was thinking of getting my son his first smart phone here very shortly, but don't want to waste an upgrade on an iPhone 5 right now. The wife has a iPhone 4 kicking around with a shattered screen that works perfect. Just needs a new screen. I am really good with electronics, fixing stuff so I have no doubt I could replace th screen. If I fail then the experience will be worth it alone. Anyway I see tons of sites to buy screens from, tons more on eBay. But then I guess there are many variations of quality once installed. Where to buy from?? Many people also advertise on Craigslist but I imagine for $75 installed the screens may be the lower quality ones. Any input appreciated! Thanks!