I usually use car wax... and am partial to Mother Mequiars. I also use a carnuba wax-based spray on furniture polish sometimes. It really just depends on what I have in the shop at the time. I'm really just looking to add a hydrophobic (water repellent) layer over the parts and pieces on my bike.

Realistically, my bikes only get waxed 2-3X a year. To put this in perspective, if I only ride to work and back, I put in about 150 miles a week. Most commonly, I am putting in 200+ miles a week year-round.