i just got my modules last month from aixiz and im quite happy with them. half the price of gregs for some reason so all the better. they come exactly as shown in the picture except they dont show the springthat is included. as far as i know they are the same greg sells.
it says the lasers are 8x, and i havent checked the sides to see the model number and ive already mounted them all in housings, but they seem much more powerful. i ordered mine in a pack of 5, which he doesnt offer anymore. im glad i did because i pulled the leg off my first one. always good to have some spares just in case the unexpected happens. so now i have 4 more and they can easily cut a piece of black tape or pop a balloon 6ft away in a matter of seconds.
from pictures/movies ive seen mine diodes are just as bright or brighter than other peoples 16x diodes. i cant remember exactly when i got them but its been around a month and its still going strong, burnt through a 2mm of plastic case in about 5-10 seconds, possibly quicker.