Positives:
1. Friendly staff
2. televisions for each seat ($5 is reasonable)
3. free drinks
4. assigned seats

Negatives:
1. Frequent Flier program is lame



Quick story: About a year ago, girfriend and I got to the airport late (as our ticketed flight was actually departing) and Frontier could have left us screwed, instead Frontier put us on the next flight without a bit of attitude or mention of fees. Made me likely to choose them again if visiting Denver.^