which microwave to buy?

So now that I bought a TM and it didn't come with a microwave, I think I should get one. I feel reluctant to use the propane up on things that could be heated or cooked in the microwave. I just don't treasure having to exchange the propane tanks all the time... I am wondering if anyone has bought a microwave that is small and light weight yet has enough watts to work well. Would you mind sharing your make and model with me before I run out and buy one?

Thank you so much!
Trudy