Different brands of bulbs!

has anyone tested different brand of mh and hps bulbs to see if there's a big difference? like those $50-70 universal bulbs how are they compare to like hortilux $100+ bulbs? also same with airstones. i've used the 2" little cheap airstones from walmart. so will it be better if i've used bigger airstones? thanks..

more bubbles = more bud that how roots get oxygen to grow so two big airstone will work better than one and yes better expensive bulb for hps remember dont touch before screw it in use cloth.

more bubbles = more bud that how roots get oxygen to grow so yeah 2 airstones are better thatn just 1 and yeah i would buy the highest bulb a good 250 watt hps will work pretty good depends on grow space

what airtones should i get? don't want too expensive cuz i've got 30 dwc 5 gallon buckets. that's y i always used those cheap ones. what bulbs you guys recommend? thanks..