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Head-Fier
This is the point I'm most interested in being a 4xx owner. If the 5xx was out back when I had purchased, I likely would have just skipped straight to the 5xx. But is it really a notable step up from the 4xx? I guess we'll find out as more users get their hands on them.Also, I think others will be interested in if many people think it's an improvement over the 4XX or not.