Air France

Plane: Boeing 777-300
Seat plan: 2-4-2
Features: adjustable head, leg and foot rests, power port
Available routes from Bangkok: Paris & Amsterdam
What’s special: We love the French design: there’s a separate shell for each seat, so nobody is tilting their seat onto you.

British Airways

Plane: Boeing 744/777
Seat plan: 2-4-2
Features: adjustable head, leg and foot rests, power port
Available route from Bangkok: London
What’s special: BA was the first airline to introduce Premium Eco in 2000. Its new revamped World Traveller Plus Class looks even classier but it’s not yet available on flights from Bangkok.

EVA

Plane: Boeing 777/747-400
Seat plan: 2-4-2
Features: adjustable head, leg and foot rests, power port
Available routes from Bangkok: Taipei, London, Amsterdam
What’s special: EVA’s Elite Class boasts some of the widest seats, biggest recline angle, special meals and an overnight kit. Best of all, it’s also only 20-30% more expensive than eco.

JAL

Plane: Boeing 777-300
Seat plan: 2-4-2
Features: adjustable leg and foot rests, universal power port
Available route from Bangkok: Tokyo
What’s special: The JAL Skyshell Seat is completely isolated from the the passenger behind, even when titled, earning it a nod from the Good Design Awards in 2008. Too bad it costs nearly three times as much as eco.

Qantas

Plane: Boeing 474 / Airbus A380
Seat plan: 2-3-2 on A380, 2-4-2 on 747
Features: adjustable head, leg and foot rests, power port
Available route from Bangkok: Sydney
What’s special: Designed by famous designer Marc Newson, Qantas’s Premium Economy has been ranked No. 1 in Skytrax World’s Ten Best Premium Economy Class Seats for a couple of years. The pricing, though, is way up there with Turkish and JAL.

SAS

Plane: Airbus A330/340
Seat plan: 2-3-2
Features: adjustable head, leg and foot rests, universal power port
Available routes from Bangkok: Copenhagen, Oslo and Stockholm
What’s special: Not only do you get more legroom and a more ergonomic seat, SAS’s Economy Extra also gets you Business Class benefits that include priority check-in and upgraded meals.

THAI Airways

Plane: Airbus A340-500
Seat plan: 2-3-2
Features: adjustable leg rest, universal power port
Available route from Bangkok: Los Angeles
What’s special: Finally, THAI doesn’t lose face this time. Its Premium Economy features some of the widest seats and greatest legroom. Throw in “smooth as silk” service, one of the lowest price premiums compared to regular eco, and the extra miles earned, and you’d have a winner if only it existed on more routes.

Turkish Airlines

Plane: Boeing 777
Seat plan: 2-3-2
Features: adjustable leg and foot rest, power port, access to foot massage apparatus
Available route from Bangkok: Istanbul
What’s special: Turkish’s Comfor Class seats offer the greatest amount of legroom in our roundup. And with everything tucked in the armrest, your screen doesn’t move when the passenger in front reclines. The price, though, is more business than eco.