I generally use local wildflower honey...the apple is what really should stand out anyway...
Regarding the "pepper honey," I assume you mean honey from the Brazilian Pepper Tree...I have tasted this honey, and it is a nice honey...while it's not something that I might choose to make a pure varietal mead with, I'd think it would make a great cyser.
You will find mixed opinions on buckwheat mead...I personally like the taste of the honey, but have yet to try a mead made with it...
Packaged: Fruitcake Old Ale
Primary: 15 Min Pale Ale (Waimea hops), Unoriginal clone (hoppy session mead)
Secondary: Why do I keep this line here...?
Bulk Aging: Simple Cyser '15, Cocobochet, Wild Cider (2014 & 2015)
Planned: So many ideas, not enough time to brew them....