I am using tractor type spots on each corner of the cab on my 2200. The angle of the original lights on the tractor are hardly worth anything if you are using any kind of front mounted implements.
I didn't bother trying any other bulbs in the headlights of my MF GC2300 (similar to BX2200). But, I recently had 2 additional work lights installed on top of the ROPS (can turn 'em under for protection) and it makes a world of difference for FEL and snowblower work. Considered mounting them under the ROPS, but angle was wrong to be very effective, unfortunately...