I picked this up awhile ago;
http://www.rondomusic.net/bg205fretless.html
Under $200 delivered. 1st was damaged, within a week I had a replacement in my hands.
I ordered it
after emailing stating that I may very well be exchanging or asking for a refund. Said "no problem". I've nothing but high regards for Rondo and wouldn't hesitate on additional orders.
About the quality,,,, they are not high end by any means. They look good, mine sounds damned good for the price and hope to make it better. Just now finished installing a new bridge, shimming the neck, and a couple of other things. Next is to rework the nut, and do a setup.
Was it really required? Definitely not. But I like what I like and know it's unlikely to expect a $200 5 string fretless to meet my desires. Knew this long before trying an SX.
In the end this will probably be my beater bass. Not because of any shortcomings as far as looks, tone, playability go, I just get into some "iffy' places at times and don't want to be overly concerned if my bass gets knocked or someone wants to "play & drop".
As far as I'm concerned, from what I've seen, I'd take a SX over a Squire, Hondo, or any of the higher priced low ends from any manufacturer (Washburn, Yamaha, etc.) without hesitation.
They have a very big bang for the buck IMO.
The Brice I've not seen or heard. But with Rondo doing the selling with their policy the only thing you could loose is $20 or less shipping if you're not completely happy. I'd say, "Try it".