I've got my Canon EOS 400D with the 18-55 lens that it came with. Been playing around with some stuff, but LOTS to learn yet.

We are going on holiday in a couple of months and I want to get another lens. I really don't want to get into spending fortunes, but want to be able to photograph things that are further away, am I looking at the right kinds of lens?

Canon EF-S 55-250mm f/4-5.6 IS ......

http://www.canon.co.uk/For_Home/Prod...6_IS/index.asp

Canon EF 75-300mm f/4-5.6 IS USM......

http://www.canon.co.uk/For_Home/Prod..._USM/index.asp

Both are Image Stabilised lenses and the 70-300 is significantly more expensive, so obviously I would rather buy the 55-250 unless there is a very significant reason why I should buy the 70-300 and that I would appreciate the difference at my level of experience (and for the forseeable future).

I want to have more versatility when we are on Holiday, but would like to a lens that is more suited to photographing trackdays etc too and I remember Adrian saying that he uses a Tamron 70-300 for this. I do fancy the Image Stabilisation though and I can find the 55-250 for around £170.

So, whats the story?