What have your experiences been on spiritair's spirit plus product? i flew DTW-LAX last night on it, paying the $70 upgrade fee from coach (which was bought during an $89 o/w fair sale). I thought in general it was worth the upgrade. Free drinks but no food served (free snacks).
coach NK's A321s its 6 across with 31-32in pitch. plus is 4 across with 36 inch pitch. the only gripe is no IFE on a nearly transcon flight. but then again, $70 only. (and it was full).