It's called 'Southwest'.
Depends on what routes you fly and when you go. At the time that I booked our flight to MCO, SW was the absolute lowest, and then you realize the savings of no charge for checked bags, and it's all good.
The Southwest comment made me laugh. I am flying US Airways. All 5 of us for $897. If all 5 of us take a bag, RT for our checked baggage will be $230. Total will be $1127. Southwest, for the same dates and times, for the 5 of us is $1642. $500 extra for our bags to fly "FREE".
As long as you're sure to recognize it when SW is the cheapest for some flight you take. Or that it can be the lowest for others.
I call it Jetblue as you can actually eat a variety of snacks and drinks and pick your seat for the same price as being cattle prodded into a group just to be able to carry an extra free bag.
Plus I get TV on teh flight.
Ugh. On our one and only JB flight we had a ticket agent that was rude to me (I was thanking her for something, but she was too busy interrupting me in a too-low-to-hear voice to hear that I was THANKING her, and she yelled at me), we had a flight attendant that was rude (knocked hubby's hand away from the seatback button, pressed it, and SLAMMED, with his other hand, hubby's seat up), and my TV was broken.
As for choosing seats, many of us prefer to actually, literally choose our seats once we're on board the plane. Many of us have had the experience of having seats *changed* when we get to the ticket counter to check bags...makes the time you spent "choosing" your seat worthless! This happened to me often on the big carriers, and it's been happening with hubby's work travel as well recently.
Anyway, I prefer to listen to Rick Steves' info on packing light...but NOT for Disney. We use his carry-on-sized bags (even the right size for most European airlines, though NOT for Qantas if I recall correctly) and generally check them, but we certainly could carry them on and actually CARRY them on since the most they've ever weighed, when packed to the rafters (we were checking them that time, the expandable zipper was expanded) was under 30 lbs.