Aims is a bottom of the barrel product.
I suggest you look at a Magnum 3012 hybrid inverter charger. Imarine sells them at a great price.
Why hybrid? Because it can do load assist for those times when there is only 15 amp shore power. I.E. I can plug into 15 amp 1800 watt shore power--but still use 3000 watts without tripping the shore power breaker. You do have to get a remote to access the load support feature.
http://www.imarineusa.com/MagnumEnergyMSH3012M.aspxVictron and Outback make similar hybrid inverter/chargers.