Question for Ruger Pistoleros.....

I have a chance to buy back my Ruger P94 (.40 S&W in stainless) from the friend I sold it to. It has hogue grips, 5 magazines, and some factory work that made it shoot quite well. Price should be around $300. It has maybe 500 rounds through it. Its not what you call conceal and carry material but I like shooting it and its a great gun to take along when hunting in the winter or stashing under the front seat. I was kind of interested in the Ruger P-90 as well (.45 caliber). The P-94 is seven and a quarter inches long. The P-90 is seven and a half inches long. For those who know, is that much of a difference? My holsters and everything else was set up for the P-94.

Finally, why does the recoil from a Sig 229 in .40 seem so much sharper than recoil in the Ruger P-94 in .40?