You may be opening a can of worms with this opinion thread. Older games have a HUGE following. SO many die hard guys just love their EMs for example even though they are boring as hell.
Older machines might be easier to repair (if parts are available) but they require more repairing. Newer games need less work/maintenance. And the LED boards should outlast your ownership time. I wouldn't worry.

I personally have owned many of the 90s classics in the past. Maintenance/repairs was just part of it. I'd buy a machine, put some time & money into making it perfect then get bored and sell it.
Then I started buying modern new pins. Big difference! The newer pins are WAY deeper and more challenging. So much more to try and accomplish. Modes, missions, side missions. There's really no comparison.
Yes the 80's/90's pins are fun to shoot sometimes but it's absolutely night and day from the deep rulesets of new pins.
Case in point, I just bought a brand new MMRRE because I always wanted a Medieval Madness. Yes it's beautiful and has all the new amazing lights and the cool XL DMD, but it's STILL a 90s game with 90s rules. And it's too simple! Too easy! It won't last.

Just my opinions.
Junky

100% yes