No offense to either of the last 2 poster but the Dive Rite reels are well designed and operate fine....I use them all the time and have never had any issues......have yet to have a DR SideWinder foul during use. For the beginner//OP wishing to invest in a primary reel a 250ft. model is more than enough. Salvo makes wonderful reels at a good price point also as I indicated previous. The Op may find he needs the 400ft. model per his cave instructors gear list. I find that most of my reel and spool needs can be met by a 250ft. reel and 2 spools a few line arrows. If the OP finds he is working wrecks and reef systems more often then #36 is a far better pick for line wt..