Brian,
From Muzzleloader Builders Supply, Catalog 11-A:
Magic Maple Stain
This is an acid stain especially formulated for curly maple. One of the best, but first-timers be careful. ...it does a great job on your curly maple.
4 oz.-$4.00
I always just used Aqua Fortis, and have had the results I wanted, but I've seen some really nice looking finishes done with non acid stains, also.
Todd