So I placed an order from www.reprolabels.com and ordered the sticker for these two. I was very surprised at the quality of these. These are not home-made type stickers. These are professionally printed and die-cut decals. The Jazz stickers came with two sheets. One sheet had the chrome stickers and the other had the clear type decals. What's great about reprolabels products is that they not only replace the badly applied decals on your used transformers, but they also include extra decals to restore painted details too! The Sunstreaker stickers even came with a factory installed sticker-the black trapezoidy thingy on the chest which the bootleggers unfortunately (or fortunately) left out of the finished product.
Before these stickers arrived, my Jazz was looking rather bland as was my Sunstreaker. They look good as-is out of the package, but they were perfect candidates for some stickers.
After applying the stickers to my bland Transformers, I was in awe of their new-found sexiness. I am so happy with the end results. What I liked is that they are super-sticky and still allow some re-placement so you can set 'em straight before patting them down. They don't get ruined easy either. I ran my nail across the surface and it left no marks.
I especially liked what these stickers did for my Sunstreaker. I love this guy even if he is a bootleg. The decals really brought out the life in this figure. It's a very 80's looking sticker theme but hey, that's the charm of these figures!
Overall, I'm very happy with what they have to offer. They also offer replacement stickers for other toys besides Transformers. I will definitely be buying some more stickers soon. They also offer decals to upgrade and customize your figures so check 'em out.
Oh, almost forgot! For every $10 you spend, they send you a sticker sheet of Autobot and Decepticon logos! And just in case you are wondering, no they did not sponsor these decals to me. I placed an order just like anyone else would and paid for them with real money! I am just a satisfied customer.
Update 02/06/2011: I have video review of these stickers now.