I'm a happy owner of TWO FX's.
one is a 7.2 WSD that I bought to beat the hail out of on the canal towpath, the other is the 7.6 that I bought to replace my Pilot. I intend to use that as a 'go-fast' (for me, anyway) road bike.
I know the 7.5 looks nice but for your needs I would say go for the 7.3. or 7.2.
Why? Because it's sturdier (32 spokes vs.20) and because it's well within your budget. It leaves you some discretionary funds for, well you know, stuff. Stuff adds up 
Just my humble opinion.
I wonder why there's not a 7.4?
I just noticed your $1000 is Canadian. I just can't do that math right now
Last edited by Zen; 03-24-2009 at 04:03 PM.
2008 Trek FX 7.2/Terry Cite X
2009 Jamis Aurora/Brooks B-68
2010 Trek FX 7.6 WSD/stock bontrager