The Southwest does win out in weight by about 7 ounces, but the Ultra Circuit offers similar abrasion resistance and waterproofing in a more sustainably built package (the Ultra fabric is made from 100% recycled polyester)
Then you have the Fathom NSD which has a lever drag, which has a more conventional design, suitable for use as both a shore or boat reel The lever drag on the standard model (NSD) makes it easier to adjust the drag on the go if you have a crash diving pollack heading for a wreck on your hands
Dolphins grant Cetaceous Speed, increasing GP regeneration by 10 per tick, and Auroral Flipper, increasing SC activation rate
They both offer guides above the blank, and both offer smaller guides
Once you start paying over $100 for a reel, you start to get added features that improve upon the sealing, durability and smoothness of the reel