Just an update, after calling KEH, CRJ, and Canon, rough estimates for what appeared to be a faulty shutter would have been around $200+, IF that's what was truly wrong and nothing more. After speaking with Canon yesterday and getting the scoop on their loyalty program, I decided not to get the 40D repaired and instead opted on getting a refurbished 7D from Canon. I'll send them my 40D for them to salvage parts & recycle.
I figured I'd probably be getting a 7D in the near future anyway, and the price from them was too good to pass up. I hope it's a good refurb. If not, I'll have 14 days for a return/exchange and a 90 day warranty.
Aside from postings here, I'd heard other good things about CRJ from other folks, and I came really close to taking the camera there to get repaired until I heard Canon's price for a refurb 7D (almost $500 of the price of a new one).
Just food for thought for anyone else out there who might be in a similar situation in the future... sounds like we have some good repair facilities in the area if you need to go that way, or consider Canon's loyalty program for a refurb. I should get my 7D Friday.