4, 8, 16 ohm sound difference?

I've noticed that usually 16 ohms is louder and brighter sounding than 4 or 8 ohms, and that the dynamic range tends to be just a little more sensitive. Also, if you have a volume difference in output (especially between different speaker types/brands/etc.) then you may compensate and drive the amp differently, thus affecting tone more significantly.
 
I had every intention of helping you until I read this.

I agree, that's why he won't be posting here anymore in the future.

I agree with him that we have way too many arrogant, ignorant and condescending young timers here, we don't need those, they need to be sorted out...and his post was one of the most arrogant and condescending post I've read here in a long time.
I won't permaban them from the UM board, but I do have the possibility of denying access to the Sneap forum.
Something that'll happen much more often in the future...culling the herd (only talking about disrespectful and arrogant new members with low post count here...you know, the ones that keep flooding the forum recently)