Just wanted to add a quick prelim review to the discussion. I'll definitely need a lot more time to figure this thing out and know how it handles all different types of shots, but so far it's pretty good. It's VERY overstable and very dependable. I was using an Exo Hard Tactic for the last year for my O/S approach disc (and always have a Berg for my straight approach). And it was really good, but always wanted it in a premium slick plastic, like Neo or C line or something like that. It's so tacky and grippy, that sometimes I'd grip lock it right and end up WAY out of position. And I'm not about to spend 30-35 bucks on a Claw II. So I saw Kastaplast came out with this Jarn and picked one up.
It's maybe a touch faster than most other "normal" approach discs, has a very hard fade, very low glide and fights wind very well. Also can get some good skip off the ground or ground play as well. I've only thrown it like 8-10 times so far on course, so haven't had time to mess with it, trying all sorts of shots. But it's very dependable, gets to ground quick, and fades hard. I have a very O/S Prodigy A3, a normal A4, and an Exo Hard Tactic, and it's more stable than all of those! And my A3 gets turning fast and falls out of the air quick. I think with it being a speed 4.5, you might need to throw it pretty hard to get a more straight to fade flight. Whereas at slower speeds (like on approaches) it's much more O/S and turns really quick.
It also has very low glide and wants to fall out of the air like a Berg. So you can throw it to where you want it to land, and know that it'll just die and kick left. At this point, it seems more like a utility disc for specific shots than a good all around approach. I'm trying to only carry 4 total throwing putters and approach discs now (2 throwing putters, 2 approach). So I've got my putters on lock down. I carry 2 out of the 3, depending on the course. A Neutron Proxy (for unerstable to straight shots), Neutron Ion (for straight to slight fade shots) and an Eclipse Envy (for straight to medium fade shots). Then my Berg and a Tactic. And so far, this thing is TOO O/S to be really useful in lots of situations. But that could change as time goes on and it gets more beat in or I get used to it more. Who knows.
Feel in the hand though is amazing! A lot like a Tactic or Zone, but with that absolutely money K1 plastic and feel. BOARD flat on top and I just LOVE how it feels! This Jarn/Tactic/Zone disc shape has to be one of my favorite feeling discs in my hand. And I'd say it's my favorite feeling FH disc of ALL discs. Even more so than my FD2 or X2. The plastic has some flex to it, but not too much. And NO weird flashing or anything. It's super smooth right out of the box and feels SO good in the hand for BH and FH. And the K1 plastic means it's not going to be so tacky or sticky that it grip locks coming out on soft approaches (like my Exo Tactic does sometimes).
I think once I get more time with this in practice and on the course, it could be a go to approach disc. Whereas right now, I'm just using it for wind shots or approaches that need a hard skip left because of something blocking my line. Tough to say right now. It's SO O/S and low glide that I'm not sure if it will end up being a keeper or not. I might try one of the new Evolution plastic Tactics to see if it's similar but less O/S, as I think the Claw II is going to be almost like this Jarn (but WAY too expensive). Time will tell.