If the 4-H youth is shooting more than "modified trap" his dad will more than likely be buying him a new gun next season.
The less expensive o/u simply do not hold up with the higher volume of rounds required to compete in 4-H Trap, Skeet and Sporting Clays.
CZ makes a couple of o/u which are in the $800 - $1000 price range. If you are shooting a few hundred rounds a year for hunting or an occasional round of clays these seem to be a good value and have a good warranty.
One of our kids shot a Mossberg Silver Reserve, and shot it very well. He broke it and Mossberg replaced it. He broke the replacement twice and a gunsmith fixed it both times. His dad eventually bought him a Benelli 828. Couldn't shoot it worth a darn (to light maybe?). Traded it for a Browning 725 and finished his 4H career with it (shooting it much better).