Need to buy 600 bulb - question on Hortilux, etc?

I'm buying a 3 month old used 600 HPS system. Comes with basic 600 bulb. I'll be using this strictly for flowering. I was thinking about buying a good bulb but now I'm not so sure if I want to go with the Hortilux. I'm reading that the blue is more for vegging. A 'one-bulb' does all type of deal.

I've been using a 400 watt MH for vegging and switching to my 430 hortilux for flower. I wonder now if the blue is causing stretch or more growth and I should have gone with a more basic red type bulb?

My options for the 600 are confusing. The hortilux shows 86k lumens, the cheaper Son T 92k lumens, and there is a Solarmax with 95k lumens. Wouldn't I want to shoot for more lumens (95k) over the Hortilux's 86k? For flower?
Am I semi-shooting myself in the foot going with the Hortilux here?

dude if u get a 600w hps on something that small i think ure plants are going to fry unless u use lots of vent in that space