The Cessna 150/152's are certainly worthy of consideration although a flying club I'm in has phased them out recently in favor of 172's for entry level training as they've found they cost as much as 172's to maintain. All the 172's, except the earlier models with Continental O-300 145 HP engines, are seriously overpriced these days IMO. Well-kept early 172's are wonderful airplanes, but some students may not appreciate their virtues and see only a very old airplane. The Cherokee 140, 180, Warrior, and Archer are fabulous trainers and basic personal use planes. Cherokee 140's (of which most actually have 150 HP engines) are bargains these days. They all best Cessna 150/152's in useful load, if looked at essentially as two-place trainers, but are also often capable of carrying more than two under carefully planned circumstances. The late model 140's (circa 1970-1976) usually had dual toe brakes, as well as features from the then new Warrior/Archer series such as more modern throttle and mixture controls, an elevator trim wheel between the front seats, improved sound-proofing and cabin ventilation, and a standard six-pack. These are superb trainers and just fun to fly. They are defintely not for routine mountain flying, and fall short of the useful load of 172's, but what they are meant for, they do very well. The late model Cherokee 180's and early Warriors and Archers compete head-to-head with more modern 172's, and are going to cost more of course, but sill notably less than 172's with comparable specs (especially STC'd 160 and 180 HP 172's).