I had two LP's, one with a 60's and the other with a 50's style neck. I'm not a shredder so speed is not a factor in neck size, however, tone IS! I found the 50's neck LP to have a bigger tone. I don't know, it could have been other factors of course but the tone of the 50's LP was way thicker to me. The 60's style neck was a bit more comfortable at first but after playing the 50's neck a bunch I just got used to it.
I sold the LP with the 60's neck.