I've used the 85 F1.8 and the 135 F2L. Didn't like the 85 1.8 at all (the lens I rented had a horrible CA problem). Used the 135 for basketball, and it worked great for that. Took it in the studio for about an hour to play with it before returning it. I think it would be fine, but my 70-200 F4 works just as well in studio. I think the 135 would be really nice for outdoors.
I've had very good luck with the 17-55 F2.8 lens, honestly. Didn't like it until I got the 7D and could micro adjust it. And it performs best at F4 and up (not as sharp when it's opened up more). At 55mm, F5.6, it's a fantasic portrait lens. Get physically close to the subject, and it offers good - not great - bokeh. If you have to buy one lens, under $1K, and you want it to be wide, this is the one for you.
Canon 7D Gripped; Canon 7D ii Gripped; Canon 17-55 f/2.8 IS USM; Canon 70-200 f/2.8 L; Canon TS-E 24 f/3.5 L; Sigma 85 f/1.4; Rokinon 8mm f/3.5; various lights & gizmos