inverter choice advise

[mahendra]

Ok my xantrex sw2000 finally looks like it is going to die after being overworked and its an opportunity for me to switch my system to 48v nominal and adding a more robust work horse inverter.
However in am contemplating on the choice of the new 48v inverter ,my choices are outback radian 4048, xantrex 4548,magnum 4448 or outback 3648. I am more concern on performance and longevity of the inverter rather than size .Please advise!!!

[vtmaps]

Do you want/need 240 v split phase?  Do you have a generator?  If so, is it 120 volts or 240 volts.  Do you want/need generator support?

--vtMaps

[mahendra]

no to all of the above strickly 120v

[vtmaps]

no to all of the above strickly 120v

Well then, it probably comes down to price and tare loss.  It's been awhile since I've researched it, but last time I looked, the Outback vfx3648 had the lowest tare loss.  Also, if you buy a 240 volt inverter, make sure it works at full capacity and efficiently with a 120 volt output and with a 120 volt generator input. 

--vtMaps