I have a P229 less than one year old and a P239 less than 3 months old and I'm completely satisfied with their performance.
Curious as to what the catastrophic failures were? I googled it and no mention anywhere of a problem with any Sig - as a matter of fact most police links highly recommend it!
My son prefers the Glock to the Sig as a combat weapon but that is because of it's durability. Drop it in the mud, full of sand, 120 degrees outside and it still fires. He prefers the Sig for a patrol carry weapon though and hates the Berretta.
The Mosquito is a .22 - everyone has problems with .22's - usually it's the ammo they feed it. The P238 had a recall after Sig identified a problem with the safety - they called them back and are repairing the weapons. Hell even Honda and Toyota have recalls.
Don't count them out so quick shootingftw