Solo, I talk to fuck all at the gym and like it that way. I won't even ask for a spot, don't want anyone becoming my 'buddy', which is the downfall of training solo...unable to handle the low rep range with confidence on pressing moves.
Although for the past few weeks I have trained chest with an old training buddy and my bench is blowing up.
Like CB38AC said: "I'm a loner everywhere...why be fake and try to talk to people you dont really like"
That is me, don't see the point in small talk with strangers.
Rugger