Gearing really is a personal choice, and comes down mainly to how closely spaced you like your gears and how hilly your area is. If you get a double with a 34x53 and 11x36 combo, that's going to get you over most climbs that you'll face on the road, but you are looking at pretty big jumps compared to a 30x39x53 combo with an 11x32.
The type of shifting you want can also matter. SRAM doesn't make triple front doubletap shifters, so you need to do something like using a barend shifter for the front derailleur if you want a triple with SRAM.
We get over everything around us with a 39x32, so I have the bike set up with a 39x53 double, but it's a triple crank, so if we ever go to real mountains, I can put the 30 chainring on as needed. If I wanted to leave the triple on, then I could put an 11x25 on the back for regular riding, but I'll put up with the wider shift gaps on the cassette not to deal with the triple in the front.