Any HW. A pro LHW would still kick my ass but at only 175lb I could shell and not get too badly hurt. Then just take a dive.

As a matter of fact, last night in our gym a retired pro LHW sparred with an amateur HW and the HW kicked his ass. (They were going pretty hard...who the hell knows why.) It just goes to show how much more wallop the HWs have even if they're not as skilled or fast as the guys a weightclass or two below them.