Just to clarify on the Desperado LE..
It has about 20% of the resin that is in a typical mild reactive.. this was added to help give a little bit of skid, but not take away from the general urethane feel.
As I am sure most of you will know, a true 100% urethane ball will not really hold a shine, pearl or not. We added the little bit of resin so that it was slightly easier to polish, but even with this, you still cannot get a glossy polished finished on the ball.
The Desperado LE has be designed for short tournament oil, not light conditions. While many bowlers can use it on lighter conditions, it is not designed for this. As stated above, urethanes are not weaker than resins, they just skid less and respond slower to friction.
If you want a urethane for light oil, go for one of the weaker cored pearl versions on the market, and if you want one for shorter tournament patterns go for a solid with a stronger core, such as the LE.
Ryan Press - Seismic Staff Member