Just to throw in my $.02- check out an Abu Garcia Orra SX or Revo S. I've got ten Black Max, two Silver Max, an STX-L, two SX-L, three S-L, BC5601, 5601C4, Kalex 51, and a Revo Skeet. Of the whole bunch, the Revo S gives the most bang for the buck, wish I had discovered them first! It doesn't have adjustable magnets, but has a really nice centrifugal brake. The Orra is nearly the same thing, but I haven't tried one personally as it is one of two models they don't make in a left-hand version.
For a round reel, the Kalex is hard to beat for around $80.