We were an early adopter, the claims around data reduction were unproven, and the evergreen and hit-less array upgrades were unheard of in the storage vendor community. Their high price point was a risk as if the claims did not become a reality the value proposition was invalid. Other Vendors had a more rounded portfolio of products, we were concerned Pure was a one-trick pony, but they have continued to innovate and deliver on all their promises.
From the initial purchase, we have looked at their other products, our advice would be to ensure you are very clear on your workloads, capacity and performance characteristics. Their products perform exceptionally well, at a price point, we could not justify the investment for Flash Blade, not a reflection on the product, more the usage scenario and ROI from our side.