I've always used "First Polytunnels" had it for about 12 years, used three covers (partly my fault as the communal bonfire is on the next plot...) but there have been several threads about them. If I was just going for a few toms I'd have a basket one (Whippersnapper) to get some very early, a Black Cherry or Sungold for salads and a larger one eg "Greek" for grill and cooking... :)