First Time Going Dry Camping (Need Battery to work)

Bummer, I was hoping that I could avoid purchasing a new battery. But that is the price I pay for not doing my homework. I know I need a deep cycle battery but do you guys have any recommendations as to what brand or model? We only plan to do dry camping two or three times a year with the trips only lasting a weekend.

Also, thanks for all the information regarding the battery disconnect switch. I will definitely install one of those with the new battery.