Sold a few Para Ords back in my retail days, never had any complaints. Always heard they were quite accurate, but have read about some issues with the alloy frame models cracking. Probably best to research that on your own though, you know how internet commandos can be.

As for .40 and 10mm, I've had both at one time or another, and they both have their place. If you can afford to feed a 10mm and can get past the extra muzzle flip/recoil that's the way to fly. Just be sure to get one that's strong enough to reload to the cartridge's potential as most factory ammo these days doesn't do it justice.