What are the better engine cleaners out there?

My EGR is starting to get clogged up at 160,000 miles and is throwing an intermittent code for low flow. I'd imagine that my injectors could use some cleaner as well after this amount of mileage. Fuel economy is also down from where it was earlier in the engine's life.

This is my first diesel so I don't know much about what fuel additive cleaners are out there and which ones really give results. Any advice is welcome. Searching the internet, everyone's products apparently work miracles if you believe all the hype.

This is a 2012 F250 6.7L

 

I don't have any evidence to say which is best or if they even work. I'd trust anything sold by Ford, many have good things to say about them. Diesel Kleen is also touted as being good stuff.