New Lights

not buy that fixture. lol
check out marine depot i think you will have much better results. for reef lighting you want around 160 watts to grow corals on a 40 gallon tank

 

So whats the lighting of choice these days

 

well every tank is different. due to gallonage, dimensions, coral that are desired.

but a t5 HO setup would be best for your tank for any type of coral
with atleast 160 watts total(the wattage is important)

 

I would like something that if I change something in the tank I would not need to change the lighting

 

What are the dimentions of your tank? I am about to purchase lights for my 40G and my tank is 36"s long. So I am doing the tek kit.
https://diyreef.authsecure.com/shop/product_info.php?cPath=55_82&products_id=375

Then you will need to buy bulbs. total comes to about $289 and is good enough to grow everything

 

What sostoudt suggested could be your best bet, I have the 216W 4 lights
and so far so good, low maintenance and easy on the electric bill also. And if the tank length dimension is smaller 48" it is less than $200. Not to be rude;
but you can buy them online way cheaper, try some of the site sponsors.