Although I was pretty happy with the stock configuration, the tinkerer inside of me had to let loose and mod my Samsung Infuse 4G (4.5" screen, Super AMOLED). With no help from others, (directly) it took me several hours to figure everything out. I even semi-bricked it at one point, but recovering it wasn't too difficult.
My phone originally came with Android 2.2.1 and was promised to be updated to 2.3.6 sometime over the last 9 months. But it seems like that is not going to happen. So I took matters into my own hands and made it happen. I'm so glad I did. Now I have a 2.3.6 custom ROM that seems a bit more responsive with less bloat. Plus the extra features are a nice touch. Btw, I'm running the Zeus ROM.
Anyone else here doing any modding?