I'll be placing an order for the S5 next month, along with Senn HD600's.
It's easy to justify the Benjie purchase: I like the Fiio X5 a lot, but obviously, it doesn't travel well as a portable player. Since I bring my computer along to cafe or library, I just use that instead.
The seen's a little more difficult; $300 or close to it, when a distinct minority claim that koss headphones at $50 or under compare favorably or may be preferable. Nonetheless, head fi's rep is on the line, and it's a good test of the validity of their benchmarking. Is senn truly a benchmark for neutral headphones or not? I'll find out soon enough.