LEDs can be applied with maximum effect if you know what you are doing from experience. There is a definite set of rules to LED fitting a machine. Most people will have their own variation on those rules. I still stick with NO LEDs for p/f GI and anything that normally has any dimming effect. Everywhere else goes, although I have now switched exposed (condom) bulbs from LED to coloured incandeascent as I find them softer on the eyes when viewed directly.

Also, I find the (warm white) Cointake ultras (the ones that dont have a nipple) to be the best for backbox GI lighting for 90's machines.