I rather like the D.R. Harris, their balms and aftershaves are spectacular in my opinion and have always seemed to be consistently great over the many years.
I think I prefer the Sandalwood scent from D.R. Harris particularly the aftershave but it has to be said that the Arlington range is definitely great and probably their best selling soap.
As for Proraso then you'll get no argument from me there. The fact that it's that cheap means you can load that brush, build that lather like its nobody else's business and enjoy it knowing that the next time it will be just as cheap, readily available and just as great.
If you like the Green Proraso then I recommend the Red.