Here's MTD Kingston Super 5 I got earlier this year, has been upgraded periodically and now is 10/10. It was perfectly serviceable stock, but I saw a few examples of these mods and they looked so much better.
Biggest differences are probably aesthetic (no more easily tarnished chrome), but a few practical ones too (e.g. switching, and passive option). It did cost me a small fortune, but I can't see myself ever selling it. With the 3 way coil taps giving 15 sound options and this preamp, it can pretty much do everything.
I am most pleased that I installed all of these myself, too (with only mild swearing).
Bartolini DL5CBC Pickups
Bartolini HR-5.4AP/918 Preamp (18v)
Hipshot B Style bridge
Hipshot Ultralite tuners
MTD USA Knobs
Dunlop Straplocks
2 x 3 way coil taps (Removed series option to have single coil/parallel/single coil)
Satin finish polished to semi-gloss.