So currently i shoot with a Canon 300D Rebel. Instead of making a body upgrade I'd like to gather some lens' first. Im a little too cheap to go for Canon L glass so ive been looking into "comparable" Sigma versions. I shoot mostly Car's and Car related events (car shows). First on my list is a BG-E3 grip for the extra batterylife and added comfort, and a 580ex flash. But when i make the purchase for those 2 items i want to grab a lens to save some time. Ive been looking into the Sigma 70-200 f/2.8 but wont be able to afford that in addition to the 2 purchases ill be making so that will have to wait a few months. Ive been looking into the Sigma 17-70 f/2.8-4.5 DC and the 24-70 f/2.8 EX DG. Ive read different reviews on both and they both come back positive and negative, and both seem to be very sharp lens'. I cant determine what would be best for my needs, lots of times a bit of a wider angle lens is needed for up close shots. So i added the Sigma 10-20 f/4-5.6 EX DC HSM into the mix. I not only need the wider angle, but i also need the zoom. A little bit of wide angle and zoom are needed.
My main question was asking which is the better all around lens for my needs. I like the Sigma brand and havent looked into the other 3rd party competetors so please dont hesitate to leave suggestions. Sorry for making you all read so much.