There are quite a few. Not that they're better than what I have now, but GAS is a never ending struggle...
Lakland Joe Osborne Ltd Ed. It sounded SO GOOD, but it had a skinny jazz neck that made my hand cramp... But it sounded SO GOOD!
Dingwall AB1 (whalepool burst with blacked headstock and neck pocket). Can't think why I sold that one. Would have it back in a heartbeat now, more because if I still had it I probably wouldn't be hankering after a D-roc 5 string so much...
Wal mk1 Custom. Didn't really like it, but look what they're going for nowadays!
Squier SQ Precision that I bought for buttons and sold for 2.5 times as much. Sounded brilliant. But I made the mistake of playing it next to a 64/65 P bass which made it sound and feel like a toy. Sold it the next week. Missed it pretty much immediately...
ACG Recurve 4 string. I'm terrible for wavering back and forth between 4 and 5 strings. This went when in favour of keeping my 5 string ACG... Should have kept it! It's still around here somewhere (or possibly the Facebook ACG group, I can't recall right now). Wouldn't be the first time I've bought a bass back...
ACG "cricket club" Finn P bass. I did buy this one back, but it's seen minimal attention since and I think there's a cull coming that it won't survive.
Warwick Corvette 4. Lovely bubinga body and wenge neck. Sold my Wal and replaced it with this. Sold it when I was a bit strapped for cash. Unfortunately Warwicks were a bit out of fashion at the time and it went for 300 quid... I was going to say I've never let as good a bass go for so little money, but the Squier SQ above sold for less...