I played a round where I alternated between a Callaway HX Hot, BB Red, and a Warbird (that I found near the 15th hole on the course I was playing).

I can definitely tell the difference between any of those and a low compression ball like the Titleist DT SoLo or Top Flite XL 3000 Super Feel, but I probably couldn't tell any difference in feel between the 3 Callaway distance balls. The HX Hot cover seems a little more durable than the BB Red cover (but that could be my imagination).

I guess I should just play the Warbirds and save the $10/dozen for greens fees but I feel like I'd be slumming it with those.