I’ve never played the Webster McFall but I have owned a Merlin for two years now and I love it. I first heard it a harp tasting at Somerset and it had me from the beginning. It has a very full, rich sound and a brightness to the upper strings. Rick Rubarth is great to work with, too. Best of luck in your search for the right harp.
Listening to samples on the internet seems to be tricky. I know that my computer speakers are not good. If you contact Bill, I believe he may have a CD of the McFall he can send you.
I can tell you that my McFall actually has more volumn than my L&H Style 85GP pedal harp. And I know what you mean about the “something special” about the McFall. Bill based the design on a 100 year old James McFall harp he has. It has a ancient, Celtic feel that really touched my Scottish/Irish heart!
Please feel free to email me if you have any questions.
Thank you very much to all for answering my post. I am still looking but also I am realising that getting a harp of that quality might just be a bit too early for me at the moment. But I am definitely keeping all comments for future reference! Thanks for taking the time to reply.