I think and fish along the same lines as Buddy. Some anglers may find the 6wt Rio Typ 6 or Type 8 lines hard to handle with a 5wt rod due to the long (37ft) and heavy (240grain) head. This will depend on the angler and the rod. I have 5wt rods that are happy with this and 5wt rods that are not.

An alternative would be to match a 7wt type 6 or type 8 Rio Shooting head matched with .024" diameter Rio Powerflex Shooting line or a Rio Custom Cut T8 Outbound cut back to 27 or 26 feet.

The Rio Deep 7 is a great line for deep fishing as Buddy noted.