I have acrosoft photo studio on my computer. it's nothing fancy, but works well. I'm using a 35mm so I scan all my photos. i found that the sofware doesn't let me scan as high of quality as if i go strait to the scanner. photo studio only lets me scan up to 600dpi, and throu the scanner I can get 1600dpi. I have a cannon pixma mp150 scanner. On my blog you said that you liked your 35mm, so I wouls say stick with it. In order to get the quality of 100iso film you need to have a 12 megapixel camera. but that all depends on what you are doing with you photos also. my wife has a 5 megapixel kodak and looks very good up to 8x10. Lots of publishers still use both. also you can have 35mm film processed to digital files that would be equivelant to a very nice digital. I use a Canon AE-1, and love it. It's easy to find lenses and really is a lot of fun. that is somthing to consider with digital also. Interchangable lenses are a must for most photography, and when it comes time to get lenses you will want a large selection. The thing I like about my camera is the batterylife can be years. The canon F-1 had no battery at all, and lots of proffesional photographers used those back in the day. They still sell on e-bay for $600 lol. I got my AE-1 for $100 with a case, two flashes, three lenses, and a couple filters.
hope my rambling helps lol
Ben