I understand you're paying for the proprietary software, not the hardware. That doesn't mean I agree with the cost. Calling it "goodness" would be like saying you're paying for the "sorcery". If they are going to charge some insane amount of money then they should use all enterprise grade hardware vs cheaping out the customer and slapping $500/consumer grade disks in there. Basically with Pure they charge a ton for their operating system and they further increase profits by using consumer grade hardware.
I will likely go with Tegile. They offer nearly as good dedupe/compression as Pure and don't cost anywhere near $160K for 11 TB of RAW eMLC. Tegile has my respect right now. They use all enterprise grade hardware including SAS grade mechanical disks. They are also going to let me evaluate a system identical to the one I would buy. They also seem honest. They told me a realistic IOPS number (15k IOPS per controller, 30K total between two active/active to be conservative), not "yes we do 1,000,000 IOPS! (and in fine print "but with 1K blocks which is never used", etc).
I've heard nothing but had things about Nimble from a lot of people. I know a few vendors I work with refuse to quote Nimble to me because of botched implementations.