I have both and use the laser to collimate the secondary and the cheshire to collimate the primary. If I were to buy again through I would probably buy the deluxe laser from BINTEL:
https://www.bintelshop.com.au/Product.aspx?ID=6737
This allows you to see the returning beam and therefore collimate the primary mirror as well with the laser. I have heard though that this may not give you correct collimation because for some reason a single beam can return to it's source even when the scope is out of collimation a little bit. From my understanding this could be remedied by inserting the laser into a barlow which would then create a slightly diffuse returning beam. Someone please correct me if this is not the case
. Anyway, I hope this has helped.
Leon