I used to use Chamois Butt'r and was happy with it until it started causing some skin problems. I don't think it was an allergy because it didn't happen all the time, but sometimes I would develop a slight rash after using it. (I have very sensitive skin that's prone to contact dermatitis, so this would not necessarily be a problem for you.)

Last year I started using Hoo Ha Ride Glide, which works fine and so far my skin is okay with it. It tingles a bit, I think from peppermint, but nothing annoying or burning. The other day I did a 5-hour ride, and I think I would have been better off if I'd reapplied it mid-way through the ride. But there was only slight chafing, and this is the first time I've felt that it started to wear off before my ride was done -- it's been fine for rides up to 4 hours long.

I was able to get small samples of Hoo Ha Ride Glide at my LBS, so I could try it for free.

http://www.reflectsports.com/hoo-ha-...de-description