<p style="margin: 0px;">Definitely pure sine if you are wanting to use a microwave... I have modified sine and the microwave doesn't like it at all.</p><p style="margin: 0px;"> </p><p style="margin: 0px;">A microwave continously uses 1.5 times the amount of power it is rated at due to inefficiencies. An 800 watt will use 1200 watts continuously. I agree with the assertion that you should use a 1500 watt at the minimum.</p><p style="margin: 0px;"> </p><p style="margin: 0px;">I may end up replacing the inverter purchased with a pure sine model... Since there is a Honda generator on board all the time, I can get by with a much smaller model of inverter. But overall, I almost never use the microwave anyway....</p><p style="margin: 0px;"> </p><p style="margin: 0px;">Have fun! 1500 W would be nice... Get something with strong reviews. There are some Chinese ones out there that are cheap but use poor quality transformers - the inverters get hot, are inefficient, and burn up early...</p><p style="margin: 0px;"> </p><p style="margin: 0px;">I would feel good about the AIMS models. <img src="/images/boards/smilies/smile.gif" border="0" align="absmiddle"></p><p style="margin: 0px;"> </p><p style="margin: 0px;">VT</p>