I'd try the St. Croix Bank Robber, if you can get your hands on one... Been very curious to try one, and I think Kelley Galloup is the man so I'm curious to see his designs in action.
I went for a BVK 7wt. for my huge streamers... Keep it in my car for bass, and it works well on the TX coast as a second rod. It was bought to be versatile like that
I just got back from chucking streamers on the Taylor and the Gunnison, and I have to say that my 5 wt. XP sure performed in a pinch (left my BVK at the house, doh!). I paired it with a sinking 10' head from Rio that I picked up, and I had a grand ole time.
I'd never fished streamers for trout much until last year, and I've gotta say that I'm pretty hooked... One evening n the Taylor the fish were rising and I tried everything that was buzzing (and was guiding a business client from back home and my wife, showing them naturals an the imitations I was throwing on for them... client really liked the entomology lesson and found it fascinating, which was awesome for a bug nerd like me).
Never figured out what they were taking on/near the top, went to the car and got out my streamer rig and started banging out to 70', caught three pig rainbows, all of which were strong fighters and CRUSHED the big articulated streamers I was throwing
. It was too much fun