Our previous motorhome, almost identical to the 2005 24SS (but a 1998 model) had a Heart Interface (now Xantrex) 1000W modified sine inverter/charger. It easily ran the microwave (though at reduced power), coffee pot, clothes iron (my wife sews), toaster, hair dryer, blender, waffle iron, espresso machine, lap top, TV and satellite receiver, drill, battery chargers (including a 12 volt, 8 amp unit). The big items were only one at a time, of course
Since I want to run all the same things, I'm tempted to get a similar unit, as the 1000W modified sine units are cheaper and smaller (easier to install). Over the 16 years I had the other motorhome, I was able to run everything I wanted, so a sine wave unit would not seem to provide any benefit, but are also bigger and more costly.
Currently, I'm installing a new battery tray that can hold 4 batteries, but I'll use either two 6 volt golf cart units, or three 12 volt units. That will give me 225 to 360 amp hours (I had 225 in the old motorhome).
The RAMSOND units are inverters only; I want an inverter/charger, as the present charger does not charge very fast. Magnum makes one that seems attractive: 1200 watts continuous output, 70 amp charger, 20 amp transfer relay.
I'd prefer a sine wave unit, of course, but it's advantages aren't compelling. The added cost isn't as big a factor for me as squeezing it into a place near the battery.