Which lens to buy for Canon 650D?

I had Nikon D3100 with 18-55mm lens to over an year and the focal length was perfect for my use (product photography) but recently I bought Canon 650D and due to all the buzz about the nifty-fifty, i dropped the kit lens and got 50mm F1.8 instead but now I've realized that 50mm is too close for me. I want something wider and now I miss 18-55mm. There is one thing i love about 50mm F1.8 and that is its fast aperture.

So i started looking for a 18-55mm alternative but with faster aperture. My budget is around 300-400USD and I came across a couple of options like Tamron 17-50mm F2.8 or Sigma 17-50mm F2.8 or the bit expensive Sigma 17-70mm F2.8-4 (though I dont wana go any slower than F2.8).

So which one should I go for or is there any better alternatives? I also plan to buy Canon 55-200mm F4-5.6 for outdoor shooting.