Our coach came with 1200W MSW inverter that powers some outlets. It has worked very well for us. We have lost no electronics though we have boondocked/dry camped at least 200 days over the last year and a half.
One advantage of not having all outlets powered is we don't have to run around unplugging things when using the inverter. Having a lot of things on 'standby' can drain quite a few amps off the battery.
We have a 900W coffee maker and a 400W crock pot and both run fine off the inverter. Our microwave is not on the inverter and we have no need to add it - the generator will power it if needed but usually we can find something to eat that doesn't require it.
If we had to install a new charger/inverter, we would definitely go with the higher powered charger over the higher output inverter. It would get our batteries charged faster rather than using the batteries faster.