I HATED Bliss...that crap burned my bits for days after I used it. I don't know which ingredient had that effect, but I haven't had that issue with anything else.

The products I like best are That Butt Stuff (I bought it 'cause the name made me chuckle, but discovered that I really like it), with the addition of a bit of Brave Soldier Friction Zone for my longest rides. I use TBS on the chamois, then add the Friction Zone directly to any specific areas that have a history of giving me trouble.