i took my 5153 50w to my buddies house to compare to his because mine was excessively noisy, and i wanted to see if his was quieter. by the time i made it over there i had a few hours of playtime on it so i guess it had just needed a breaking in since mine was brand new. anyway, i noticed some differences between them. his has the Fender "F" on the 5150 III badge and mine doesnt. also his stripe plate is matte black, and mine is gloss black. a few beers later i decided to give mine some flash. the all white got a wee bit boring. in case anyone wanted to see them without the grille i had ordered 12 red knobs but the seller only sent 6. ill try the others when they arrive, but i think i like it this way pretty well. maybe i will do the other knobs in black. i wanted to match Eddie's original stripe pattern with the white, red, and black.