Never really thought about this. Have about 40 EMs here of all vintages and makes
and can't really say one brand is any harder to maintain than any other. Sure, some
are far more complex (esp bingos!) but if I were you I'd find one I like and get
it.

As someone else already said a big part of the fun is finding out how they work, getting
them going, then playing them. Its a different world than any SS pins but far more
variety and things to discover.

The pin I'd suggest is a Wms AZTEC. Its fast with a variety of shots, colorful and
everyone that has played mine really likes it.

Have fun!