I use the Shure PSM200 for in-ears, and line-6 g50. All of our band uses in-ears and wireless mics and guitars. The other guys have the line6 g30 and they haven't had issues either. From time to time I pick up static through the in-ears, but a quick channel change has always solved it. As for interference with the bass and line6: never had an issue.
-> MM Stingray 4S; MM Stingray Classic 5; El Capitan 5
-> Orange TT500; Ampeg SVT 410HLF