I'm sure there are others that have more experience with both, but I recently upgraded from a Hobie Passport with standard Mirage Drive to an Outback with 180 Drive. Before that, I was able to trade drives on the water with my buddy who had a 180 just to compare the two in real time in similar conditions. I had the turbo fin upgrade on my standard Mirage drive. I'd say the biggest difference I noticed with the 180 aside from the reverse function is the ease of motion. With the standard drive, when I matched cadence with my friend side-by-side next to me, I was able to maintain about the same speed at a similar rate of pedals. But when doing the same with the 180 drive dropped in, I realized it required MUCH less effort on my part to maintain that same speed(about 4-5mph in mostly calm conditions). It just feels like there is less resistance on the fins and they glide much better. It was nice being able to swap drives in the same kayak to compare so I know I wasn't experiencing a difference in hull design, weight, etc. Top speed was also slightly faster as well.
On another note, the reverse function is very useful! Only taken out the new Outback once and there were a few times I had my Tady snagged and I was able to stop, back up, and get it unhooked quickly without having to make a big circle and drying to pull it out with the rod behind me. I imagine that would be very useful fighting a big fish, but that hasn't been something I've had the opportunity to experience (YET!
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One downside that was brought to my attention before my purchase was the cost of replacement and replacement parts. Just all the more reason to secure it at all times!
Would love to hear more feedback as well and any tips to maintaining the 180T from those more experienced with them.