What are the two best overflow boxes on the market today?

External overflows?
I've heard great things about the CPR overflows coupled with an aqualifter pump.
I bought this exact setup for my new tank but returned it yesterday because I decided to drill my tank and install an internal overflow with a durso standpipe. But all the reviews i heard on the CPR setup were very positive.
 
I recommend a U-tube type overflow like the Eshopps. I used 1 for over 15 years and it never failed once. Plus, you don't need an aqualift pump like the CRP style.
 
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