Favorite Whiskey Blend for Mixed Drinks

[awhiskeydrink]

What's your favorite whiskey blend for a mix drink? Every time I see an old fashion recipe it calls for a blended whiskey.

I'm also looking for a very smooth/understated blended whiskey for a bitters taste tasting I'm doing on my blog.

I'd love your recommendations because most of my experience has been in straight bourbon and single malts. Honestly, I feel like I'm missing out a little.

Blended Spanish wines are some of the best deals I've come across; Can the same be true for Whiskey? Never really thought about it till I came across this forum.

Thank you Everybody