I personally use Walmart's Deep cycle in my
Scamp. Its been there for just over 4 years now and still going strong but I am not the typical user. My
battery is on the charge wizard 24-7 at home and when actually out camping it is on
solar the whole time. I don't have allot of battery demand that isn't fully recharged a couple of hours after the sun is up. Hardest use is winter in Quartzsite when I run the heater all night and part of the evening. Voltage has never been below 12.3 volts when discharged. All of my 12 volts
lights are L.E.D and the only other consumption is a DVD player for at least 4 hours every night. I can't complain the battery is cheapest out there, didn't need the warranty. Probably will replace it next year or so and go for another 5 years and still cheaper than a high end battery that I doubt would last 10 years. You roll your dice and you take your chances.