Even if I have just bought my first rangefinder, a M6, and I'm planning to use it everywhere, I'll keep my 350D. It's a great camera, and proved to have very good image quality. It's served me well, since I have it. Now it's an outdated body, because the 400D is a reality, but I don't have plans to sell it. I'll keep it and shoot both film and digital. For me, digital has a lot of uses. Pictures of friends, you can email them quickly, pics for sells/auctions, tele and macro, you can review pics inmediately...
What made me buy a film camera again is that I'm starting to feel that the "digital look" is too cold for me. I've reviewed pictures from my compact film cameras, and even if the resolution of those is not great, the color of the pictures is. And B&W, it's just way better in film. If you want to get good quality prints from digital, you better do it yourself, learn about color profiles, calibrating printers and monitors, buying a printer, inks, and paper... Besides that, the color prints from local labs are worse than those processed in C41, just because C41 is a fixed process. Digital isn't. Every lab applies some kind of retouch to your jpgs, to "improve" them. I took some pictures in my sister's wedding, and the lab screwed the prints by not using the correct color profile I used (Adobe RGB), and using their own instead of converting. Result, greenish skin tones YUCK.
I took my 350D to Cuba, and I swore that it was the last time I'll ever carry the camera, a Canon 10-22, a Sigma 17-70, a Canon 75-300, and a Canon 50 1.8 during a 10 hour walk in La Habana. My back was hurting badly at the end of the day.
Javier.