apcial dominance is a factor you need to consider... topping a lower branch may only results in 2 larfy colas instead of 1 larger larfy cola.. and is that a good thing? not sure.
when you top, it will cause more growth lower on that limb and will eventually refocus at the top like anywhere else on the plant. highest poitns get more resources,once it recovers from the intial stress.
if you understand these 2 factors and know how deep you can grow good buds relative to your equipment and environmental variables, then you can make a very infored decision where to top the plant.
a strong lib geting lots of light and strong growth (near top)? sure...
a lower limb with weak light that was destined for extraction, hash bin or cooking? not so much
Combine LST (bending) to break apical dominance and spread out growth among the new tops you create after pruning.. .this wil have best effect. you want it all level and growing together at same height... may need to bend something down and while it recovers, the other parts will catch up. don't even need to tie it down if small differences. simply bending in morning can be enough to stall that 1 cola and others can catch up. bigger differences and you'll have to tie something down to same level more permanently and remove it later if you can.
big question is ... the opportunity cost of the time it takes to get everything even... would you have done nearly as well with a standard xmas tree shape with more simple topping/lst methods? definitely takes less tme, which is a big deal if you grow back-to-back in perpetuity. i try to get a level canopy while sacrificing the least amount of lost time... i don't grow constantly though, so an extre week or two in vege is of little consequence for my productivity/costs etc.