Comfort refers to your pleasure; the amount and staying power of the lubricant can make a difference in how good the sexual activity feels, and whether the lubricant irritates your genitals.
Safety refers to your health; oil-based lubricants cannot be used with latex condoms, as they can destroy the latex and cause condom failure.
Durex Play Lubricants
Jo System H2O Lubricants
Jo System H20 Flavored Lubricants
Kama Sutra Lubricant
Swiss Navy Lubricants
Jo System Anal Lubricant
Intimate Earth Anal Lubricant