If you can spend $500, the Martin D12X1 is fantastic. The startabond necks are bulletbroof. I can put mine in a frozen car trunk and take it out and the set up and tuning are perfect. I've had my D12X1 for a couple years now; it was an upgrade from an Epi.
At $330, the Yamaha FG720 - 12 String is a great solid top guitar. They are available everywhere and I prefer the tone and feel over a Seagull (and Seagulls are generally best bargain bets)
Yamaha 12 String Linky
John