Well, I know nothing about that flash... but the 50mm f1.8 is fantastic. My wife uses it 100% of the time. I have even seen people use a 50mm f1.8 on a 1D body. I do love flash though and indoors in low light I prefer a flash versus using a 50 or 85mm wide open at higher ISOs. Depending on your skill level you'd need to use that flash in "M" mode since I assume it has no ETTL mode. However, I could show you how to set-up that camera/flash in 10 minutes. I can't remember if the T1i has second-curtain flash or not. Hopefully, so... I'd also invest in a cord to use that flash off camera. I wouldn't use a $60 Canon cord with a $100 flash so use something cheaper.
Last edited by skull; 11-08-2010 at 2:24 PM.