LED for a 4x4. Best bang for my bucks?

[Death The Cultivator]

Thanks guys!
I've decided to go with 2 Mars Hydro SP 250 (Yep,i busted the budget! ) and thinking of building a 4.5 x 4.5 grow room instead of 4 x 4.
You guys think the SP 250 can handle the extra .5 ?
Having some extra room to move around would be nice...

If you space the lights for a 4x4 they will be fine. Try a 5x5 for an extra 6" on each side. I've had to buy flood tables and sizing them exactly for the space is obnoxious. A 5x5 space for a 4x4 light footprint would be the route I would go

 

[KonopCh]

Look into my journal, you can see my setup. It's similar as @Damien50 but it's made of Samsung strips (183 lumens per watt).

 

[Sqwirlman]

California light works solar extreme 500 is what I am using for my 4x4 tent. It cost just over 400 bucks and I love it. This is my current grow all 5 autos are right around day 50. If you can manage a little extra it is well worth it. The two outside lights are part of California light works UV-B kit.