Need help in choosing a light for vegging

Hey all...........

Right now I'm using a 1000 watt MH bulb in a 4 x 4 tent for veg. I would like to save some money on my electric and also lower my heat output. Yes, I do have a glass enclosed reflector with great exhaust.
I believe this bulb is a bit on the overkill side for the size of my tent but the damn clones grow fast as hell with it.

I have looked over my options and so far I don't like what I see.

I don't think the 400 MH will be enough but I never used one so I can't be sure. My 1000 grows my clones into small 12" bushes in 2 weeks with one topping but I can't stand the heat it gives off. How fast would the 400 watt MH grow my clones? It's got to be slower right? No experience with this bulb at all.

I looked over the 600 watt MH conversion bulbs but the lumen output is crap and they last 50% of what other bulbs last. Makes me not want to buy one of these. Plus they are expensive as hell.

The 1000 watt MH I have is just too damn much so this is not a further option for me.

I also looked over the 600 watt Super hps bulbs. They have a ton of lumens and seem to have dual spectrum abilities. I wonder if this bulb would be what I'm looking for to veg? It has kick ass stats and lasts very long compared to the 600 watt MH conversion bulb AND it's cheaper!

I can't use T5's cause my tent is just a few inches too small to fit the 4' fixtures. Plus I already have the reflector for the tent so it would be a waste of money and I don't believe they would grow my clones as fast as my 1000 would. I have some experience with these bulbs and while they are good for veg they just don't work as fast.

Any ideas? 600 super hps? 400 mh? 600 conversion? Hopefully someone has a similar situation as I do and knows what's up.

Thanks

im pretty much goin through the same thoughts right now, trying to find the perfect light to invest in. from what you've said the super hps sounds great. duh. there wasnt anything bad about it you could find? and it was cheaper.

i would go with the 600W super hps light or the switchable 600W. If you got a decent amount of plants in there and you're letting them veg for a while, your going to want the power that the 600W puts out over the 400W. It will be better able to penetrate dense veg growth. It will also save you a little bit of money over the 1000W and less heat.