Anyone here replaced tuners recently ?

I have a Mex thin-line Tele and a TexMex Californian Strat that both have HORRIBLE HORIBLE slot top tuning pegs. Whilst these don’t provide an immediate problem, I just hate them in a very intense and irrational manner and want to change them.

What I want to know is….. Has anyone has performed this operation recently and if so, which tuners did they use?

I don’t want to be drilling / filling my headstock so I figure that the new tuners need to fit onto the old guitars pretty snugly.

I have been to StewMac.com and most of their tuners state that they requite a 10mm peg hole. I don’t know if this is the same as the existing peg-holes drilled into my headstocks and frankly I’m scared of doing drilling / filling incase I break something.

Any advice is appreciated
S