The main difference between the R21 classic and the R21-EC is the EC has a larger engine and goes a little faster, has built-in facilities (stove, sink, water, toilet, heater, and refer) and two seats in the cabin. If you do not need these items, then you have your answer - go for the classic. If you do need these items and are willing to settle for a Coleman camp stove, an ice chest, a porta-pottie, and a water jug, then go for the classic. If you need these items and want the convenience of built-in facilities, then go for the EC. Another thing, if you plan to go on trips or rendezvous' and travel 50-60 miles, then you may not want to stand at the helm for 8-10 hours at a time - then you would want a EC where you and your mate can sit in the cabin. Having benches/chairs in the cabin are also nice when the weather turns nasty and you want to be in the cabin to get away from the rain/waves in the cockpit. So, there you have it. Owning a boat is all about deciding what you want, what you can afford, and what you can live with. (When I say "you", I am talking about you and your mate). Have fun deciding.