i have a dilemma. right now i have 50mm 1.4 usm lens. its a great lens and i cant ask for anything more, that is if i were to have a full frame camera. sadly though i have a 40d, which is cropped sensor. sooo the 50mm would be equal to about 80mm. thats just not making me happy because i usually shoot on location in tight spaces and the 50mm is only letting me take shots of faces. so i saw the 28mm 1.8 usm lens. but the thing is, it has wayyyy less review than that of the 50mm on bhphotovideo.com about 230 reviews less. so which one should i sacrifice for? anyone here have a 28mm?