We have an Italian made SMEV two-burner in our Oliver
, and I absolutely love it. Heats up quick, easy cleanup, very efficient. There's a SMEV dealer on ebay who has five new one-burners for sale
right now. Here's a link to his site:
PS The two burner we have has a glass lid that allows us to use the stove as countertop when not cooking... You might want to look at that, too.