i have received my blue one sp10b from sofirn store on aliexpress…i have no complaints, but one thing is making me unhappy a little bit…electronic switch button is a little bit loose or rattle a bit…in fact, the top of the button…it has good tactile feeling while pressing and changing modes, but you can hear it while shaking flashlight…it looks like the top of the button has some room to wiggle…otherwise, everything else is fine…i have sofirn sf10 as well, and sp10 is much brighter on maximum…sp10 compared to sf10 has cooler white tint, while sf10 is more neutral white…