You should look at 3-motor decks, typically, as the economy, 1 motor decks need more belts, and possibly re-rubberized idlers. The mainstream decks from 1975 to the early 80's are generally safe bets. Condition will be a key factor, however. My Akai 4000D has been the most trouble free deck I've ever owned; it was in exceptional condition. The price can range from "I'm throwing this away, do you want it?" , to $5000 for a consumer machine. Start looking on Craigslist, and Barter town, as Ebay machines get broken in shipping typically. The decks mentioned are good places to start/look. $350 is a good deal for that 4300, as the box, condition, and tapes sweeten the deal. However, it is auto-reverse, which typically has dirty relays , which often means channel drops.It also doesn't mention servicing, so you'll have to add belts, and contact cleaner, plus yours/somebody else's time and labor. The 4300 also won't play 10.5" reels, while 10.5" decks can play 7" reels. Grab that deck, get it going, then enjoy it while you casually look for others, educating yourself along the way.