I was just never a big fan of speeders. they can be gunned down with bolter fire. I do like the storm wing formation so they all come in on 1 roll, not leaving anything out.
The TFCs are static, but will provide much needed long range support that can deal with large numbers.
Typhoons all the way. They can stay out of range of bolters. They also have jink. They fit in so nice with bikes.
And there's a major downside to the stormwing. I run it at 1500 sometimes and that single roll that sounds so sweet is the undoing of this formation. More than one game I've had them sitting in reserves until turn 4. Anything 1750+ I always make room for reserves manipulation when taking these guys. It's just 400+ points sitting on a shelf and not killing anything half the game otherwise.
Build a man a fire, he will be warm for a day.
Set a man on fire, he will be warm the rest of his life.