I like the Alaska Air Visa. Depending on the offer its an easy 25K-40K points (and a 7500 referral if I refer you !! ) Pretty easy to qualify though usually a lower credit limit ($2500-$7,500)

I've never used my actual AS FF# yet as you can use your American # for all flights on them, yet I still have 36K AS points just from the bonuses in 2011.

The big thing is the $99 companion cert which is good on any fare including coach or first class fares!
Depending where you live this can work out great. And both ticket earn full FF miles even if you are using your American # on the AS companion flights.

I normally do Austin-YVR in summer..$700 regular ticket and $99+ tax for companion.
Looking at doing Austin-Maui in First this fall...$1400 reg First and $99 companion.!!
And you get a new cert on line each year.

Bigshaker