These two rubbers, what ST SH blade to match?

Acoustic or Korbel

Acoustic is pretty stiff for a 5ply. Korbel is a bit softer. 

Is Korbel available in ST handle?

dauntless wrote: FH: Tenergy 2.1 Red BH: Refoma 2.0 Blk ---- Loose Criteria: What is soft enough for Tenergy and hard enough for Refoma? Prefer non WRB, ST Handle, size thicker than 6.0mm, smallest head dimensions 157x150, largest 160 x152, synthetic material/wood or all wood OK. Prefer not super stiff with enough flex for loop, enough rigidity and hardness for occasional hitting.

I'd recommend YE7.  It matches the flex and rigidity requirements that you want.

My Korbel is a 5.8mm thick blade, weighs 92 grams, is slightly head heavy, has a thin handle and works well with a soft rubber like 35% Quattro, as well as  heavier rubbers like 40% Inspirit. I didn't feel it worked as well with 44% Inspirit though.

You can get Korbels with a straight handle and weighing less than mine and that makes it a viable option.

Another option worth considering is the Clipper Wood, which is 6.8mm thick. Mine weighs 91 grams and has a better balance to it than my Korbel, due to a bigger, more comfortable handle. It also feels a livelier blade and the combination of harder inner plies and softer outer plies, makes it a versatile blade, that works well with a variety of rubbers. It works better for me with medium and medium hard rubbers, but I'd be surprised if it didn't work with soft rubbers too..

Of the blades you mention, the SK7 series strike me as a valid choice too; bearing in mind they appear to be modern Butterfly equivalents of the Clipper.

http://forum.oneofakindtrading.com.au/viewtopic.php?t=3451

The comparison is being made between a Korbel SK7 and a Clipper CR, not a standard Clipper Wood.

The Clipper CR is a lighter, thinner WRB blade, which is 5.8m thick, head heavy with glued max Almana sound and harder to loop with than the Clipper Wood, because the CR coating makes the surface harder, which gives it's speed; but less dwell time and a lower throw.

Regarding Yasaka I like the Gatien Extra which is one of the best looping blades i've used, but I haven't tried the  Extra 7.

In general 5 ply blades are easier to loop with, because they tend to be slower and more forgiving than a 7 ply, due to a higher throw. Blades like the Gatien Extra, Extra, Applegren Allplays, Stiga Allround and Dima Sawtec are all excellent looping blades. However there are 7 ply blades that can loop just as well as a 5 ply, as their construction can play a part in the playing characteristics.

One blade i've found that fits that description is the Galaxy M6, which is 5.8mm in thickness and with WRB, i.e. like the Clipper CR, but without the CR coating, which makes it slightly head heavy and slower than the Clipper, but still a good looping blade nonetheless. Like the Korbel it has a thin handle.

dauntless wrote: FH: Tenergy 2.1 Red BH: Refoma 2.0 Blk ---- Loose Criteria: What is soft enough for Tenergy and hard enough for Refoma? Prefer non WRB, ST Handle, size thicker than 6.0mm, smallest head dimensions 157x150, largest 160 x152, synthetic material/wood or all wood OK. Prefer not super stiff with enough flex for loop, enough rigidity and hardness for occasional hitting.

Why not send an email to Butterfly Customer Service and ask them what the differences in the blades are.

It wouldn't surprise if the Korbel SK7 is the SK7 rebadged for the European Market and made in the Hungary plant, instead of Japan or China.