250w vs 400w???

[fiorano]

so ive decided to do away with the majority of my softies and switch to a predominately sps and lps reef. i currently have 3 250w pemdants over my 125 gallon tank and was wondering if i would have to upgrade to 400's to get that extreme vibrant color it seems i will always be chasing after lol. and what are the pros and cons etc. any help will be greatly appreciated.