Good advice KK.
With all the different Rio tungsten lines available, you can just about cover every situation by making your own heads. A good running line and heads with loops and you are good to go.
A less expensive alternative to Rio tungsten heads is Cortland LC-13.
You won't have the different sink rates though that you will with the Rio T-8,11,14, 17 or 20.
Here is a good rule of thumb for shooting head set-ups depending on the rod weight you plan to fish.
8wt - 28' head
9wt - 29' head
10wt - 30' head
I always start with 30' and cut the head back one foot at a time until you find the sweet spot for the rod I'm fishing.
SF