A vote here for the Astro Systems barlowed collimator. The internal collimation setting screws are all locked in place at the factory in the USA and epoxied along with the barrel of the laser module itself. IT can't move - at all. They ask that if one ever does manage to lose collimation you send it back to the factory. They pay the return postage and provide the service for free otherwise. I'd say that's confidence in a product. I know a few people with one and no-one has lost that preset collimation yet.
Usage is very quick. Remove the barlow lens and insert into focuser. Turn on beam and adjust the secondary until the beam reflects off it and hits the center of your center mark on the primary. That's the secondary done. Then slip the barlow on and watch for the diffused image of the center mark come back off the primary and land on the white back of the barlow. Adjust the primary collimation screws until that mark is centred. All done either during the day or night.
I can't see the catseye being any better. All they seem to go on about in their literature is a triangular center dot.
