I think you've already hit the nail on the head. If its something relatively small or easy to do, I usually go back to see how smooth I can get it.
However if its something hench, im usually happy to do it, get it on film and not injure myself.
As for these things, its all personal preference.
I did run one on the front of my onza blade, but switched to a try all sticky, and will never go back.
IMO, its worth the extra 100 odd grams for decent amount of grip and thicker sidewall.
Dont know much about current, but im my experience appliances use only as much as they need (within reason).
Have you tried taking the hard drive out of the external and plugging it into a computer?
Longer cranks do mean more leaverage, but you can sacrifice some speed. The usual rule is 160/165mm cracks for mods and 170/175mm cranks for stocks, but this depends on gear ratios and personal preferance.
If i remember correctly (dont shoot me tarty boys if im wrong ) they arnt lubricated from factory, or lubricated enough to actually notise it.
I used engine oil to lubricate mine, thought it'd be thicker than a spray (wd40 or gt85) but thinner than most types of grease so it wouldnt cause resistance on the paws working.
Seams alot smoother, and still hasnt skipped
Id go the other way actually. borrow the widest bars you can, then put the grips as far to the end as possible and see how it feels. If its too wide, move the grips in till it feels perfect, then measure the lenth from outside of the grip to outside of the other grip.
Its personal preference, but ive found it depends on your size, build and width of your shoulders.
I personally prefer WIDE bars, 29+ inches, but ive got quite broad shoulders.