Hey! Just a couple questions to start this:
Are you on PC? If so, I have a collection of BearNades I can offer to you to mess with.
Second. What is your build like? Are you running a Mindsweeper, Green Monster, or Blast Master? Something else? These things will help determine what kind of grenades will work with you and your Bear.
So. For Mindsweeper builds, you’ve got good stuff in the crit departments. Shock Hexes would be a good one to strip shields, or cryo ones to bring your enemies to a stop while also helping a little by chewing up that nasty armor. These will crit a good bit and drop grenades of their element, giving you lots of extra help.
If you’re running Blast Master, you’re gonna want something with some good splash damage. A spring epicenter or a Moxxi’s bouncing pair gets pretty up there.
Hunter Seekers are really nice if you’re willing to hold an Unforgiven while piloting Bear. It’s a bit exploity, but it’s really powerful.
The Cloning Maddening Tracker is a standard, but doesn’t offer as much utility inside of Bear as it does outside. You normally want a BearNade to cover a hole Bear has. But I have this.
Green Monster has a lot of wonky stuff going on with it, and can bestow Corrosive damage and Splash boosts to your grenades.
Again, if you answer the questions at the beginning, I might be able to help more :).
Oh! I can send you my BearNade pamphlet