so someone stole my bike saddle, and i have to replace it. i don't know anything about saddles and i have some annoying financial restrictions. i'm down to a choice between something that appears to be the fizik aliante, which my local bike shop can get for me, or the terry butterfly, which i could order by mail sight unseen. the fizik to my untrained hands feels sort of hard. the butterfly reviews seem subjective and i've never had a ladies saddle so i'm uncertain whether i'll like it. i have a no-suspension mountain bike that i ride around town about 15 km/day at the most but sometimes go 80 km on weekends and 30-40 km a day in the summer. my old saddle came with the bike, and was possibly a san marco? but probably a cheap one.

advice? please?