In terms of pricing and quality of scans from a flatbed, the 8800f is definitely the best buy for 35mm and 120mm negatives and slides. The v700 is too pricey and it scans no better than 8800f. Afterall, if you just need a film scanner to upload and share your photos, the 8800f is definitely more than what you need already.
I don't use the crappy film holders supplied. I use a piece of glass to flatten the negs onto the scan surface to get optimum results. To get good scans, effort must be spent just like taking a photo.