as a solo traveler, usually with just a work backpack and maybe a small roll on, i often choose 17D or 17C as my preferred seat -- extra legroom, tray table that folds down... but i also sometimes go with 6D or 6C to get off the plane faster, however the seat width is reduced due to the tray being in the armrest which is a PITA for transcon. which do you prefer for transcon and why? #firstworldproblems.