I'm hearing that Mozilla plugged the horrible memory leak that plagued 4-5, and I'm looking to jump ship as quickly as possible.

Can someone who has been keeping up with the nightlies recommend a very stable 64-bit build?

Cheers,
Phoenix

Edit 7.27: Thanks a bunch speedbump

The newest one available is stable as it gets. I've been running it for two days and it does not crash. Runs just like regular old Firefox. Did I mention it's quite a bit faster than the old 32bit. I would say at least 20 percent faster.