Re: Ballantine's 17
Well, if you don't like Teachers that much, my recommendation for Ballantines 17 is drawn into question from your perspective as one's likes and dislikes are necessarily subjective. I also like Royal Salute 21yr old probably a little more than the Ballantines 17.
You probably should determine what sort of flavour profile you would like to obtain and then seek out the opinions of others who share the same view.
As for the short finish to Teachers, remember the price you are paying. You want a long finish, it can be had, usually at an unreasonable price. In my humble opinion, Teachers offers the best value for money of any scotch on the market.