So yeah, this is another one of those threads, please bear with me.
My current set-up is 40D, 50mm f/1.8, and 28-135mm. I am very happy with the 50mm, great colors, decent bokeh, very fun to use. The 28-135mm is lacking in contrast and color (easily fixed in PP, but 400+ photos gets a bit annoying) is a tad too slow for me, and most importantly, not wide enough. Now I've been looking at the Tamron 17-50mm f/2.8 non-VC and Sigma 30mm f/1.4 for a while, both of which I really want. The Sigma produces amazing photos that I would love to attempt to do, but the Tamron has 2.8 and goes wide/zoom. And then to throw in a curveball, a few of my friends have recommended a flash and seeing some of the photos on the board with flashes have made me a bit envious.
Since I'm a student I can't even come close to affording these and I have a budget of $200~350. HELP me out POTN!
*The flash I was looking at is the 430EX II.