Yeah this is a tough one. My wife is American, so has pretty demanding tastes in the Mexican department (a bit like us Brits and Indian food).. After reading some ok reports here, we went to check out El Paso just for some cocktails and nachos. Despite there being loads of free tables, the guy wouldn't let us stay for just drinks and snacks. So we left, never to return... Anyway, after a exhaustive online search a few weeks back, it turns out Mr Snorky, that you are right re: Dogstar - their mexican kitchen is the ONLY place in London I have found to recieve universal praise. Their kitchen used to be down the road at the Hobgoblin (on the edge of Bricky). Well worth a try, though I'm not too sure about their Latin Sunday Roast.. anyone tried it? T