Pros:
- more stable than the smaller 1-seat version (K-375); The 1 seat version is not very beginner friendly, as you can lose your balance even if you look to the left/right at let's say .. 90 degrees; I haven't rolled over in my K-375, but the feeling I had was that the kayak was 'sensitive' to my movement, and the wind/waves. However, in K-440 (2 seat version), I feel much more relaxed, and I can say it's 40% more stable. Re-adjusting my seating position doesn't upset the balance of the boat, and turning my head isn't an issue;
- less sensitive to lateral wind;
- you point it fairly easily, and keeps its direction in water, unlike K-375 whose nose tends to deviate a bit, under heavy paddling; It's true that K-375 is easier to turn, but K-440 is not sluggish either;
- plenty of room to carry stuff;
- more anchor points (due to having 4 sets of built-in mounts, instead of 2 sets like K-375);
- can still be used by 1 person, which can sit in the middle (between default seat positions #`1 and #2) and still paddle efficiently (50cm wide at mid in K-375, 60cm width at mid in k_440);
- average speed is about 5.4km/h, same as K-375; Top speed: 8.1 km/h, same as K-375;
Cons:
- the kayak itself is not too heavy, in fact it uses the same carry backpack as the 1 seat version; But with the gear (life jacket, aqua shoes, pump, paddles, shirt, pants, water resistant bags ..etc) it gets quite heavy; I'd like to see an average person that weights 70~80kg pick up this backpack and carry it for 100m; You need a strong back for this thing;
- You need 2 persons to lower this 2-seat version into the water, from a high bank location, else it's quite hard to do it by oneself;