A couple of things to bear in mind about old Aria SBs is, firstly, the ones with fretboard dots tend to have incredibly narrow string spacing at the bridge, which may or may not be acceptable. Secondly, there is a problem with a lot of the old MB pickups where one of the coils dies, meaning your E and A or D and G strings don’t get heard. Since the pickups are epoxy sealed they cannot be repaired. Aaron Armstrong makes a replacement which is the right size and shape but it doesn’t sound anything like the originals.
I’d second the L1000. It’s a beast with the pickup in the right place but also comfortably the most versatile single pickup passive bass out there.