Hi Annemarie,
My boyfriend reminded me of this great resource last night that I haven't checked out in awhile:
http://kenrockwell.com/tech.htmThis guy has a ton of articles about different lenses and good comparisons between them. You might want to research the lenses you are considering and you may find out something that will pull you more in one way than the other.
The page isn't very pretty looking, I suggest hitting control+F and searching for the terms you are looking for. There's a lot of good, down-to-earth info there.
The 50mm prime is a good suggestion, as others have mentioned. There are three different ones available so you can find one at a price point that will work for you and allow you to continue saving for the 70-200.
I actually read a lot of nice stuff about the non-L, 85 1.8 yesterday on that ken rockwell site. I was planning on saving up for the L, but I think the 1.8 might suit my needs for awhile and I can put that money towards something else.