If you are really prepared to take on this project yourself, the Nikon scanners are the logical choice. There is a less expensive Nikon the Coolscan V, which B&H sells for $550. Another option is used. If you are not experienced in this area, and do not wish to travel the learning curve, you might also consider paying someone else to do it.
There is a lot more to any piece of photographic equipment than basic numbers, such as a dpi number of a scanner.
Good luck.
Eric