It seems like Ashaway had this very racquet in mind when they developed their Dynamite Soft 18 string!  This blue string is a perfect match to the blue accent color on the Ultra 100 CV and Ultra Tour!

And, the gauge, a very thin 18, is a perfect match to the very stiff frame (73 RDC, 70 FF stiffness).

I think the 18 gauge string may not be durable enough for hard hitters but this combination could be very good for many players.

You can be the judge of that, of course.

The string tension of 48 lbs (21.7 kg) combined with the racquet stiffness returns an effective stiffness of 30.3 which is a very comfortable number.

This stiff, 100 square inch racquet, should pack a powerful punch with a weight of 318 gr (11.2 oz) and swing weight of 318 kg/cm^ (11.2 oz).