I recently bought the new fleeceworks perfect balance wool half pad with the inserts as shown here:
http://www.doversaddlery.com/perfect-balance-pad-wool/p/X1-19864A/?ids=hc2bsf55bupk5eaeqasg0l55
I was hesitant to buy it because of the reviews from others on this board about fleeceworks not washing well. I spoke to Dover saddlery and they told me that with the wool sewn into the acrylic backing as shown in this version makes it much more suitable for washing and it holds up better.
The primary reason I wanted this pad is because I like the full insert panels with velcro closure. It is very easy to switch inserts in and out. I did not use the fleecworks inserts, I bought thinline inserts for the front and they give my horse the bit of lift he needs in the front and it is working perfectly!
The saddle fitter had suggested the Mattes correction pad and I searched endlessly for a good deal on a used one or on sale new and I could not find one for less than 200.00. The fleeceworks has turned out to be a good substitute for my purposes.