hey guys, Ive recently purchased a pre owned t1i. I have the stock 18-55mm and purchased a 50mm 1.8 lens as a walk around lens. I like the combo but I really just want to walk around with one lens. since i live close to nyc I like to go into the city and get pics of sky scrapers, people on the street and some nice portraits. I really like what im getting out of the 50 but it feels so tight. I would like to upgrade and get better "bokeh" on my portraits. I have found using the 50 on manual gets great results but i would like to get more bokeh and head and shouldier shots. I really like prime lenses too but i can't decide which to go next. B&H suggested 28mm. I have my eye on either 70-300mm or 85mm 1.8. I have examples of pictures i would like to do but from my description what lens would you guys suggest.... This has been a hard decision..