I've tried the Albion SLK's and Prestige recently. The Albion's put my leg in an awkward position and makes me tilt my seatbones backwards.
I really like how the KN symphony and older Kieffer Wein fit me and keep me in a neutral position. I like the minimal knee rolls.
My horse's back is fairly wide and the Albion shape seems to fit him nicely and he likes it. He got very sore with my KN Symphony - so that is a no go. I have the Kieffer Wein to try, but it does not have wide panels and I'm worried it would make him sore as well.
What other saddles are good for wide backs, but help the ride keep a neutral pelvis?
I haven't looked at Friend's saddle in a while, but I think they're built with enough room for shark-fin withers. She uses it on her elderly TB, come to think of it. I used to know the L & R dealer here and she had some uber-wide ones for her Arabs.
I think her model is the Berkeley, for what that's worth. Can''t recall what the blocks were like.
I have an old Albion (Original Comfort??) with a med/wide tree and modest blocks. Do the older models put you in that awkward position, too? I got mine for a song...
Try a Kieffer Rhein - it is quite a good match for what you are describing. I have one I am no longer using that fit a very WIDE no wither horse, I did not like it because it has such minimal knee blocks. My long legged friend found it extremely comfortable.
These are older, so may not be the easiest to find. PM me if you care to see pictures of mine.
I am honestly not sure if it neutral for pelvis position, but the saddle I ended up with for my wide backed high withered OTQH I ended up with a Barnsby. It does have bigger knee blocks but unlike the Prestiges and Albions I tried on my horse (disliked the knee blocks thoroughly) I tried they don't force me somewhere....not sure why. I think they have some with smaller blocks too but on my budget I got the first Barsnby that was in the right tree size and seat size (happened to be the Richard Davison) ended up loving it.
Also, not sure how they work on horses with higher withers, but for a super, super wide horse (widest prestige wasn't wide enough) a friend of mine got a Frank Baines that I just love. Doesn't have large knee blocks and is second only to my own saddle in comfort for me.
So...not an expert but based on my own experience, maybe try some saddles that even by appearance you think you may not like- they may surprise you...I decided in desperation to just worry about fitting my horse and ended up with the most comfortable saddle I have ever had. Not sure if I just got lucky though.
I'm surprised no one has suggested Duett's to you yet. They are made with the wide/flat backed horse in mind. I have the Fidelio - which is their deep seated dressage saddle, but they have several models from which to choose. Love, love, love my Duett. I find it puts me in a good riding position.
My Appy doesn't have a super flat nor wide back, but the 34cm fit him well and he's been happy with it.
When I first got my Duett Fidelio, it tilted me forward slightly, but that was simply a matter of having the flocking slightly adjusted for my horse. Once that was done, everything fell into place perfectly.
The Fidelio has removable blocks that are underneath the saddle flap. Personally, I rode with no block.
The panels on the saddle are nice and wide. Nancy at Duett saddles has a generous trial policy as well. She's great to work with. The saddles are reasonalbly priced and have some nice options to choose from.
They also have a cutback model - the Largo - for those who need more wither clearance.