Shimano Sustain FI
The Sustain range sits nicely between the higher end Twin Power and the super popular Stradic, sharing attributes of each. Light and reliable bass spinning reels, they're happy with salt water and are naturally super smooth. Slightly better sealed than the Stradic and with an extra bearing or too, they're a nice upgrade.
Ben's an idiot so hasn't added a full category run-down yet. We're sure he'll get on it shortly.