For me there's no comparison - I wouldn't consider 5 string musicman (musicmen?) basses as the string spacing is too tight for me. Having sat down a few years ago at the gallery and A-B-C'd a US Sadowsky, 2 Moon 5 Jazzes, a Lakland JO5, a Marcus Miller 5, a USA dlx Jazz V and every other 5 in the place (including 2 Sei 5ers and quite an old Shuker 5), there was nothing that could touch the Lakland JO5 in any price range. I even preferred it to the Sadowsky 5, which although s/h was almost double the price of a new JO.
As to what OutToPlayJazz sats about a lakland DJ, it's the one lakland model I've never played but I'm surprised that the experience was a negative one. The only Lakland I don't like is the hollowbody - but hollowbody basses aren't for me anyway. Just my tuppence worth...
I'm at the penny counting stage of a JO5 purchase... Next one to appear here will have my name on it (if I'm quick enough!).