Right now I have an Interstate group 27 installed in my camper which replaced a Trojan which gave me about 3 years of reliable service until it had to be replaced. I wasn't really that impressed on the Trojan brand, maybe I got a dud. Another manufacture I have my used is Deka/East Penn power sport battery which I installed in my dual sport, it has been in the bike a couple years and is still going strong. I think I might replace the camper with a Deka AGM one next time. I do not like the idea of the battery acid mess that happens with conventional deep cycle batteries so I will probably fork out the extra money and get an AGM style next time.