great eats in the Mission [San Francisco]

spending a couple of days in SF next month, with a place to stay in the Mission. One of many many trips to SF over the years, but first time staying in this area. My idea is to 'pretend' we are in a little village called The Mission and only go to places that are walkable from where we are staying: around 17th and Guerrero (but not purists -- if needed a taxi here and there would be ok too). Would so appreciate your recommendations.
about us: coming from Portland OR so no strangers to great West Coast and innovative well-prepared food. If we had our druthers, wonderful food at a great value is the best. We are pretty adventuresome eaters and love all sorts of ethnic but creative fusion is also fine too. Wherever what is done, is done well/uniquely/creatively/authentically, at a 'reasonable' price (not into breaking the bank on this trip). For us, a great food cart is right up there with Chez Panisse along with the best dim sum in Daly City -- in other words, all are fine for us -- it's 'mediocrity' we don't go for!!
thanks in advance for your help and suggestions
Susan