I did that cheap amazon battery gig. Barely lasted 6 months. Won't do that again. Before that I used BTI and those were great. Last I checked their prices came up quite a bit.
I got a actual Apple battery last time and I am not impressed. It lasted 15 months and took a fart. I am lucky to get 2 hours if I stay away form youtube. I'm not plunking down another $150 on batteries that used to last 3 years.