I've got a mid '70s Aria Fretless (Fender Copy). From what I understand, this is the bass that Fender sued Aria over copying the J bass design. I can understand why...this thing looks EXACTLY like a Fender. Decal it with "Fender" and replace the bridge cover with the one that has an "F" on it, and you'd be hard-pressed to tell the difference...at least from a few feet away. This guitar plays pretty good, but the stock pickups really blew. I replaced the neck pickup with a Dimarzio Jazz...sounds WAY better. Anyway, to the point! Are Aria basses from that era ('70s) very good? What is the general concensus on these basses?