Well, Oban is a coastal, salty whisky, and the Distillers Edition is finished in sherry (? I think that's right, I can't remember?).
So it follows that you should probably look for other coastal whiskies that have been finished or matured entirely in sherry casks.
So try a sherry cask Highland Park (Mackillops Choice have released one or two of these), Ledaig have released a sherry version (Ledaig comes from the Tobemory Distillery on Mull), and the Distillers Edition Talisker also qualifies. (Actually, the DE Talisker is a beauty!)
Any Brora / Clynelish might also tickle your tastebuds.
A sherried Bunnahabhain would also do the trick.
Also, why not try a Campbelltown whisky, i.e. Springbank?
That should keep you going for a while!