Buds For An MH Bulb

i currently run 2 1000w mh bud bulbs and im not doing that bad, but i here that u can get bigger buds with a hps. these are what ive grown with mh

Nice, I'm also growing with only MH bulbs. Is there a significant difference between the bud bulbs and regular mh bulbs? I've been thinking about getting some mh bud bulbs but I'm not sure where they're sold.