I'm new here, so apologies if i've missed a place to introduce myself. I've got a Canon 450D, have the stock lens, and until last weekend, a Tamron 70-300 (Which came in the bundle) At first it wouldn't zoom, then it wouldn't focus either, long story short its in pieces on my desk, fairly sure it can't be fixed, the zoom sleeve is jammed in, must of had some serious pressure put on it during traveling Anyway, now looking to replace, with a better, similar lens. Budgets about £250. Will be picking up a 50mm f1.8 at some point, so really thinking of a zoom lens. I also do have a 35-105 USM, but it doesn't seem to like to focus all the time. I'm thinking something similar to my 70-300, but maybe not as bigger zoom, and obviously a better lens, as I've got about £100 more budget. I've looked at Canon's 55-250 F4/5.6, or the 75-300 F4/5.6 USM. I've got a varied style atm, as i am still doing my A2, so really the lens needs to fall into that oh so annoying category of 'General Purpose'. Faster the better though, as I'm a big Motorsport fan, and would love to start shooting some Drifting or Rally events. Any help would be great, as i am still fairly clueless about lenses, whats the best to buy etc.