I looked at and handled both the O/U & SXS. I have not shot either of them.
Initial appearance of the fit and finish seams quite good for the money.
They both seamed to shoulder and swing well. My only concern is how well
will these guns hold up after 10's of thousands of rounds and the availability of parts and service 5,10,15 years down the road.
Having said that I own a couple of CZ rifles that are real tact drivers out of
the box. I have not had any problems, and the quality of the machining and wood is as good as a Remington or Ruger at about 1/3 more. Yes, I am a licenced Machinist and Wood Patternmaker.
See if you can shoot the one you are interested in. If the quality is any where
near that of their rifles you can't go wrong for that price. You could also get
a used Browning, Beretta, or Ruger for around the same price.
Just my 2 cents.
Good luck and enjoy whatever you decide to get.