AsNoriuanswered grow question 3 years ago I personally never top, with LST you can make carpets of even weed, plant without stress develops faster. Growing from seed I think it's unneeded, growing clones - no other way, just multiple topping.
I use SuperCroping if I really want to slow down and/or lower some branch.
Any technique will drop size of cola, but used wisely should increase overall weight of harvest.
All the Best !