rokq22 - the main criteria I ended up using when I bought that bass was the 'megathread' over at the talkbass forums. It's hundreds of pages long now (they've had to archive it a couple times) with almost nothing but praise - from guys with legit basses like Lakland, Sadowsky, etc. that keep those axes at home and gig with their SX and Agile basses from Rondo.

Some swap out pickups and whatnot, but I can tell you the build quality of my SX bass is way better than my Made-in-Mexico Fender fat strat.

Excellent customer service from Kurt at Rondo. One thing you will likely have to do is a proper setup on the bridge and neck. However, with a bass, this is actually pretty easy to do with some studying of videos on the internet.

You can also see what these run for used on eBay and you'll see they hold a bit over half their MSRP from Rondo. So even if you buy one and don't like it, you can unload it for easily half what you paid Rondo - which you likely won't have to do.