I've built and fished Batson's Forecast and PacBay's Rainforest II. The Forecast is a hair faster than the Rainforest II. If (just for reference) we call medium-fast 7.5, the Forecast is about a 7.9 - the Rainforest II is about a 7.1. Sounds too analitical, but I've cast a lot of rods.

As another point of reference, I have a factory Sage TXL 3wt. It is the most buttery smooth rod I've ever cast. I think the Rainshadow II compares very closely to this rod.

I don't know if I got off the subject of the rods you're interested in, but I hope this helps.