Inverter

I am not very inverter savy, so my question is, my company is going to install any inverter that I pick out. What is one of the better brands, and what wattage will give me the best results? I'd like to run a Microwave, fridge, crock pot/slow cooker, electric element, electric shaver (recharge the shaver's internal battery) and a rice cooker/steamer, naturally, not all at the same time..... Any suggestions?
And, thanks in advance.

 

Hopefully who ever installed the I inverter used large enough wire to get the current out of the batteries. As the old saying goes, can't run a river through a straw. Most all vehicles charge at 13.8 too. Some gels in trucks give problems and keep the charging rate higher. The length of the run to the batteries also is a factor in wire size for the inverter.

 

I'm very happy so far with my Cooper Bussmann 1800w pure sinewave that came stock in my truck.