I seriously doubt that I'll be trading my bladez for r11's. The primary reason I switched from burners (since L79) to bladez was to slow the meter down to match my cg wedges, 3w, and the r11 driver I'll get at L88.
This solves a huge problem for me. Dealing with 3 diff meter speeds from the tips, where it''s more difficult to hit a fwy and long irons play a much larger role, has been a challenge.
Don't expect that my reflexes or hand/eye coordination will improve anytime soon, so it won't benefit me at all to increase the meter speed of my irons at L90 or beyond.
Are r11's the best irons? Absolutely, IMHO. But what good are they if you can't use them effectively?
My .02