I've always been with evasi0n while they released jailbreak. But ever since ios 8, I've been with Pangu. Not sure if Taig is a good option but if you don't trust Pangu, turn to Taig
Apple actually revoked the jailbreak app so now you have to download the jailbreak on a computer now rather then just on your phone. But if you already had the app prior to it being revoked you can still restart your phone and rejailbreak it.