I have also used the Versalab laser. Came in handy making Enlargement up too 140x300cm. The grain was sharp corner to corner. The thig was though that it actually wobbled on its base. Why I do not know. Possible some let it fall down.
Personally I think you can take nearly any laser light. Some do not have a straight flat base, but if the laser is not moved in any way after placing it under the lens it can be used.