I realize I'm answering in ask the pros, and I'm not, but.
I think type 6 might be the best all around tip, as it will get down in the zone quicker and stay there longer. It will also allow you to cast lighter flies. The opposite, Heavier flies on a lighter tip, isn't fun to do (for me anyways).
I have rio streamertip in a 6ips for my 8 on its way in the mail.
When I'm swinging streamers on my switch, I typically fish a type 6 tip. If I'm hanging up I'll just modify my casting angle or speed of swing, or put on a lighter and/or bushier fly.