3 Group 31 AGMs as our house bank for 315 Ah (105 each), but I set my link-10 at 300 Ah.
Our Engine start is one group 27 AGM and the Ah escapes me just now. They are all deep cycle.
When the first set went belly-up, I got our current set on Amazon.com! good price and because they were AGMs, got them delivered to my door.

See our install at; http://www.svguenevere.com/prep/proj/battery/

Yes, we did run the reefer the full time we were in the Sea (and now when cruising other places). Started with a built in Norcold, we were never fat on power, but it worked. We have now switched to an Engel and have plenty of power!! We are also adding more solar power and should be able to run the water maker about every second or third day for a few hours. Also able to charge our hooka dive gear (2 @ 35 Ah AGMs). That is in addition to all the other toys like plotter, a couple of computers and tablets & Etc.....

Greg