I saw The Beatles live in 1966, and considering the primitive equipment they worked with at the time (compared to nowadays concerts) and the deafening screams of teenage girls, I thought they sounded really good, just like their records. They were a top notch live band, which is what got them to where they were in the first place.
Also saw The Animals live around that time period. They were great too.
The Hollys outstanding
In the early days all three barnstormed across the country and played some pretty small venues