There is a reason Browning and Beretta have set the pricing standard for O/u's on the low to medium price levels. But not all models of Browning or Beretta are created equally - nor will they all fit a shooter.
I'm a big Browning O/U fan - but most of the Browning models will not fit me / requiring some alternations in the comb and/or stock in general. So it isn't just about buying a brand name / its about fit - so the gun hits where you look. So you need to try a lot of guns / to figure out what stock dimensions you need - length of pull, drop at comb, drop at heel - or a parallel comb. Buying any gun / regardless of who made it may be a waste of money. The Browning 625 series is a good example for me -- beautiful guns - but they have way too much drop at the comb for me --and they shoot way too high for me ( like 10% high ) and they beat the daylights out of me because the angle on the comb presses the meat in my face against my cheek bone ...rather than recoil under the cheek bone. I need a gun like the Browning XS Skeet, XT, XS Special - and virtually none of the Beretta's fit me ( but none of them are poorly made or bad guns ).
Problems with the other inexpensive O/U's like Stoeger, Mossberg, Baikal, CZ, Remington, etc ....are pretty well documented on this and other forums. Honestly, you might find 3 of 10 that are ok / and the other 7 are fairly suspect -- with barrrel regulation problems, spring problems, ejector problems, etc ... The problem is you can't look at them and tell which ones are good / and which ones will drive you nuts .... Remember, when you buy a gun, the store doesn't do the warranty work ( except in very rare cases / especially on most common gun ) so part of the issue is if you have a problem where do you send it ...or can your local gunsmith, if you have one you trust, get parts from that mfg. Almost anyone can work on and get parts for Browning and Beretta ....not so much on the others.
Saying buy a Browning ...( when in the Citori line alone they have about 25 models isn't quite enough ) ...but the lower end of the Citori lineup, the Lightning series, is a solid gun ( I have 2 of them ) -- one I bought new / one used. Browning XS Skeet model is a solid gun / and very much sought on the used market - especially with an adj comb in 28" or 30" barrels ( you have to get past the marketing name "skeet" because its not just a Skeet gun - its a great all purpose gun for hunting, skeet, sporting clays, etc ...
Don't buy just on price / try some guns / talk to some shooters on what they bought - and ask about adjustability and would they buy it again / and how many shells they have thru a gun with no issues ...and search the bulletin boards for a number of good used guns. You really need to figure out what "fits" first .... one guy will tell you a Mossberg silver reserve is junk, the next will tell you Baikal is junk, the next one will say Rem spartan is junk ...and I will tell you all 3 are suspect ...(but you will rarely, if ever, hear that a Browning or Beretta are junk ) and that has to tell you something.