A group of 1 or 3 should not matter. If you are the one who wants to play music loud which will bother others, you should yield. In this case, being in the majority does not entitle you to a special privilege. It's the feeling of entitlement like this which makes one do self-centered acts. You may say it's a free country and if you don't like my music, go play with another group. What if the course is full and the single has no place to go? Would you yield in this case? I think and hope so. If not, you are being an ass.
One of our regular group is dead against it so we do not play music.
Whilst playing in California with my friend and his friends last year it was quite a normal thing to do.Each cart having their own music playing...not blasting.It didn't bother me.
I played in a scramble for the Vets of Foriegn Wars last weekend and there was a marquee at the 10th tee blasting out music which could be heard all over the course,no complaints from anyone.The margeritas and bloody marys were very nice too.
I like both but can't say that either has a great deal of spin around the green. Both are known for limiting spin on a drive but with adequate distance.
Best solution is to buy a sleeve of each and give them a go. I prefer the E6 but probably play the Calloway more often.
Another to try is the Srixon Q-Star, very similar ball.