I bought two of them a few years ago, a P and a PJ. Was surprised that they weren't horrible. I've even gigged them in front of thousands, and nobody booed me or anything

Both basses gave me the same general impression.
Pros:
---Sounded really good. The pickups were surprisingly good sounding for cheapos.
---Stayed in tune and the necks didn't move in the pockets.
---A far cry better than the ultra-cheap beginner basses I had to deal with as a kid in the 70's.
Cons:
---Neck's too flat and the fretwork is lousy. Had to do a fret dressing on both of them before I could play them out successfully. Fortunately, I can do light fret dressing so it saved me some money there.
---The polepieces stick way up out of the pickups and are easily clanked.
---Generally feels cheap, with cheap pots, bridge and tuners, very thick poly finish, and a bigger and blockier feel in the hands as opposed to the sleek feel of a nice Fender or some of the better copy makers. And unless they updated it, the stock string tree also must be removed and replaced or you will break strings. A good one isn't too expensive, like $15 or something. The one on the SX's I had have sharp edges.
I ended up selling both because they just can't compete with a good US Fender. I like the pickups in the SX basses more than a lot of the more recent Fenders out there, but there are replacement pickups out there that sound better than the SX pickups and the polepieces don't stick way up, so I don't sweat it.