What is the best product to get rid of spots??

What type of spots are you talking about? For blackheads you should definitely use this cream called 'PanOxyl Aquagel 2.5%'. I've used it for the past year or so and it is fabulous but you have to apply it every day otherwise it won't make a difference. The only thing is it was prescribed for me by my doctor so you'll have to talk to your doctor about it. They might recommend a different concentration depending on how bad your skin is. It's about £2.50.
For pimply sports I use Clearasil Rapid Action Treatment cream. I like it a lot and it definitely works well. That's about £4.20 and you can get in lots of places.
And also, soap and warm water work wonders too! Wash your face every day because it gets rid of oil. Your diet also can effect your spots - less sweets and chocolate mean less spots.