I have used Fullriver 105a/hr deep cycles for about 10 years now. The first one went off somewhere else, but the oldest of the current pair I am using in my camper could be as old as 9 years( at least 8), the other one is a year younger . They are still doing quite well, I'm going to have them load tested next week for interests' sake. I'll be fitting one to my boat (6.4m Caribbean) as the house battery when the current battery dies. I went with two start batteries when I fitted it out, with the idea of swapping them between Start and House roles each year, but they don't hold up really well as house when you are camping engine off and no sun for long periods, so I'll go deep cycle house next time.
I am running two MFD's, an anchor winch, live well, fridge, and even a capstan craypot winch at times, so House gets some use.