Searching the forum I found conflicting opinions on BHB7. The RSI review and many TT members give BHB7 high marks for comfort and durability with respect to aging and not becoming "boardy". But a few mentioned that it dies as many polys do...stiff and boardy and a threat to arm health. What's your opinion on the string's comfort level over time? As it ages does it become stiff/boardy or softer/more flexibl? Can you offer a comparison to Focus Hex? Performance as cross with gut mains? Thanks!