At the moment, my least favorite is a Stainless Marlin XL7 30-06. Been a huge pain from the beginning. That stupid trigger bothered me, so I removed that blade. Trigger is much better now. What I can't fix is the feeding issue. The cartridge is fed at such a bad angle that the bolt won't feed smoothly. I slide it forward most of the way then have to bring it back till the cartridge realigns with the chamber, then close the bolt.
I'm still tinkering with it, but I think it may go down the road soon.
