Stretch during veg would be good for indicas but not so much for sativas that already grow too tall. It seems to me that it depends on what you are growing and how much veticle space you have
I personally like extra stretch during veg BECAUSE I like to LST and Mainline; I need some more spacing for my plant so it doesnt grow all bunched up during flowering
Great that you vegged with a hps but have you actually got any veg pics cause all these are flowering and its not giving a good representation of the veg period for hps unless your showing that.
had a look there, sadly don't have any veg shots for that one.
If you want, you can check out my current grow journal for paradise sensi star, I plan on vegging a full month with the hps and am gonna be posting the day 10 pic tomorrow .Im updating every other day.