To buy: spin or exercise bike??

A question about : To buy: spin or exercise bike??

I want to exercise more. I have a treadmill already and thought of getting a bike. Not sure which one to buy and will I use it. I dont want it to be a fancy clothes horse. I thought if I can watch tv whilst cycling. I have read about different bike types and prices already and still confused. I am not one to go to a spin class and prefer to exercise without an audience. I think of exercise bikes as not getting enough out of it and a spin bike better. What do you think? I was looking at one at Ј149 or Ј199 via Argos...others are too expensive.

Best answers:

• After quite a bit of research we bought this one a few months ago.
  Seems quite sturdy and no problems with it so far (although the saddle takes some breaking in!)
• Thanks for reply. Have read the amazon reviews though......mmmmm...
• I'd get a turbo trainer or a set of rollers. But there again I'm a cyclist.
  If you can watch the goggle box at the same time, your not doing it right