I almost put off-white Fender cupcake knobs from a brown-face era Fender on my MIG when I had the pots switched out. Turns out they stood too far off the front panel. The Sovtek chickenhead looks WAY cooler than the Fender chickenhead but they don't fit on modern shafts so I had to go with Fender style on the MIG-50. I'll probably include the original knobs along with all the other parts I saved that came out of the MIG when I sell it.
Yeah, bigger is always better. If not for the bone-crushing power but for the glorious clean headroom. MIG-50s are stupid loud but if you need to boost the gain it just turns into a mess.