I have an ARB 50-qt fridge in my teardrop and a pair of Optima D31M Bluetops. I chose the Optimas mostly for their low internal resistence, robustness, and VERY fast recharge times.
Our style of camping usually consists of 2-4 days of basecamping and a series of short (sometimes long) hops to new locations. I wanted something that the truck's 180 amp alternator could recharge most of the time and this set-up has worked perfectly for us. I've carried a Honda-1000 genny with us but have never needed it.
In fact, the lowest that I've ever run the batteries down is to 12.7 volts and the Optimas laugh that off.
Yellowtops are the best choice if they meet your amperage requirements; their warranty is better than Bluetops and most of them are identical internally. I chose the Bluetops in that size for the increased reserve capacity --- and there's no Yellowtop that big...