The sit on tops are easier to get into when launching, and get out of when loading up, cooler in warmer weather but cooler in cooler weather as you don't have the hul protecting/shielding your lower body. The new WS Ride models have a "high/low" seat option, at an additional cost, but are stable enough to stand up in. I have a Ride 115 and like it alot for the seat (very comfy) and stable for drifting/trolling for crappie. Test paddle anything that interests you as what you think you like in the store may not work on the water. Lots of outdoor places have demo days, take advantage of those to find a yak that suits you.