Gasanwu :
You're on the right track ... the 682 Gold E is a fine gun and will do all you need. I would just as soon have a good "older" 682 Gold (Mobil choke version) as I would the newer Optima ... the wood & so-called "checkering" on the newer 682 Gold E's leaves a lot to be desired.
The Blaser F3 will be a little more expensive - and is also a fine shotgun. Jacky is right, it is not yet offered in an "American Trap" version, so far, just a "Game" "Competition Sporting" and "Competition Trap" ( International Trap/Doubles Trap) version. Have shot one ( a 32" Sporter" ) and seen one completely apart. Impresssed on both counts, well designed, well made and great triggers) ... but still prefer my 6 year old DT10.
Sharptail: Don't pass-up the right ASE 90 if you get the chance !
IMHO they are better made & finished than the DT10, (just pull the trigger group and you'll see what I mean) and there is little meraningful "practical" difference between the Optima & Mobil systems ! ( Lots of "silverware" won with them too at the International level !) Right now, IF you can find one, they are priced right ... and a Lot less than they were when they were new.
( Big difference between 91 cent and 70 cent CDN $$$ )