I own quite a few rainshadow rods now. At first, I had my reservations about them as I had broken almost every single one I got. The one positive in that, is that their warranty was/is fantastic. After this past year of very heavy use, I'm beginning to think that my initial breaking spree was just poor luck. I very much enjoy them and reach for them each time out the door.
I have quite the variety going.
I have the IMMCP110M-4TC blank - their true centerpin blank. If I'm being completely honest, I find this one kind of cumbersome and heavy. You could possibly fix that by lighter components and cork, but I find it to be top heavy. If I were to get one built again, I would most definitely get a really heavily weighted butt to try and balance it better (I'm fairly certain that would make it feel better). I would even consider a longer bottom section so I could tuck it under my forearm (I typically prefer a short 4-5 inch bottom section, I'd probably go 6-7 inches if I built this one again). Strangely enough though, I reach for it a lot. It just feels solid, and I've never managed to break it despite numerous abuses and hits/falls. I use it all the time for Chinook and steelhead in bigger systems like the sproat/stamp and Vedder. I just recently got the lighter 13 foot 2 piece version of this IMMCP blank and haven't tried it yet - I'll try to update once I've used it a bit. It feels slightly better for the balance, still a bit heavy feeling, and I'm a little concerned about hook sets and larger fish (It's a complete noodle).
Perhaps my favorite rod by rainshadow has been the REVF1087-4SB blank built into a pin. It's insanely light and very well balanced. It's a super fun rod for coho and smaller steelhead rivers/summer runs. I'm in the process of getting one in the 8wt built to see how much heavier it is than the 7 wt. I actually used it a couple times this fall on the somass when kitty grabbed my beefier pin. It felt scary, but handled it fine overall, and I managed to land a couple mid 20 pound chromer Chinook within 10 minutes in very high water; I wouldn't make it a regular occurrence though. One thing I'll mention is that I wouldn't bush crash regularly with this rod. I've broken it from bush crashing and bruising it - the high modulus graphite doesn't seem to like any sort of smack, such as a branch flinging back and hitting it. The IMMCP blanks seem to handle a beating much better. If the Vedder or something similar without thick bush is your primary flow though, I'd highly recommend the REV blank.