Rosebank and Bladnoch are generally my favorites, though good Rosebanks are becoming scarce. '89 Murray&McDavid Rosebank is excellent, as is '90 Signatory. '91 Signatory Rosebank in the 350mL bottle isn't so good. Gordon & MacPhail Connoseurs Choice '88 Bladnoch is excellent.
Glenkinchie 10yo is decent but not great, IMO. When I first had Auchentoshan I didn't like it but I think I may not have appreciated it at the time so I should revisit it.
I really enjoy a good lowlander, especially in the summer. Their tastes are more subtle than a powerful Islay, which I also love, but they are very good in their own way IMO.