[Help]If you could get any gun at cabellas, Dicks, or walmart.ect tax free and 20% off what would you choose ?

I am currently in the Airforce and the BX on base is running a special that comes out to a price match to any local stores in the Dallas/FT Worth area, 20% off and tax free(as long as the gun is in stock at those stores). What gun models would be worth buying to keep. I just picked up two Sig 938 sas editions for $540 each ( normally $699.00 I have 5k willing to drop on this) Note #1 They will order any gun online at a 20% dicount as well even if it goes below dealers cost.