Have a lot going on and looking to see if the plant max 600hps is a good bulb. I have used it for some time but wondering if I need to try a different bulb Brand. The ultra sun is twice as much. What does everyone think on the plantmax 600s? Also can i veg on a 400 watt mh then switch to 600hps to finish with good results? I have been doing 1000hps and 600 mh and need to know if i am going to lose alot if i do this. i inmagine i can have the 600s closer than the 1000s and maybe i will still get a good result? Please help with you feed back. Thankl you.