I have one single runtime.

When I want to find something, I know which runtime to look in :-)

Sure, there's a lot of stuff in there but the library is so good now it is easy to find stuff.

I use the Favourites feature a lot. Using Favourites in an organised (hierarchical) way means that everything can be found in a logical place regardless of where it is stored within the main runtime libraries. And an item can appear in more than one place in the Favourites hierarchy without taking up any more space,as the favourites are just links to the actual items.

Spend the time to learn how to use the favourites feature and the need for multiple runtimes goes away :-)

Free stuff @ https://poser.cobrablade.net/