I had to replace my old Xantrex, but went with the 3000 PSW($1500)unit as I was also installing a household frig. I'm not sure I would recommend the 3000 over the 2000PSW($1250) units since I am only using 4 6volt batteries. The 3000 standby power requirement is almost an amp more than the 2000PSW units. I dry camp about half the time so I thought the 3000 PSW unit would be a better option. Has not worked out that I need that much power yet. I have to run the Ginny to recharge the batteries more than I would like. Solar at this time is not a good option for my purposes. Good luck with your choice.