The 12yr Doublewood is ok, it's a pretty basic entry level malt and the one I first started drinking when I got into whisky.
For the price point it's very good, but in the wider scheme of things......the 12yr Signature offers much more complexity and is all round a much better dram (and around the same price).
If you're doing Doublewood go for the 17yr old one, that is quite stunning. Balvenie works well with a little more age.
The 21yr Portwood is one of my go to everyday's, their whole range is serious stuff.