I'm surprised a few of you don't know exactly what your highest break is, everyone I play with knows what balls they potted to achieve it. Mine is 36 (4x black 1 green) I did it nearly a year ago and I've improved since then but I always choke around the 25-30 mark, been playing for about 2/3 years.
I usually play on a Friday and Saturday with the odd frame in the week.