What collimator to buy, Laser vs Cheshire

I have a GSO12" Dob that I move a lot and need to collimate regularly.

Now having an industry background in technology I like lasers, I read good and bad about them though, I like the one's with the return target (I think). Cheshire seems to be pretty foolproof but to me seem old hat and perhaps not as acurate, I think people that bag the lasers probably dont know how to use them properly??? Or am I just being geeky? Please only respond if you have first hand experience of both.

What would you buy assuming they are around the same price, ie. $69 - $120? .....and why?