Funny that Bells is mentioned as good for cleaning. In the area of Scotland where I grew up (Speyside region whisky fans), we used to say that Glenfiddich was only good for washing windows with. It was often seen as a sub par malt made with the intention of becoming a popular "Scotch" in the states. At that time in the states there were either Bourbon drinkers or those who drank Scotch (blended). So therefore they came up with a bland malt Whisky (no E) that the Americans lapped up.
Is it any surprise that Chivas (Regal and otherwise) comes from the same Distillery.
Glenmorangie (same region) has gone from being a nice mellow malt to being the "go-to" for tourists visiting Scotland, even though it is the top selling malt over the whole world.