The HR34 will probably be faster than your HR22. It also has Genie Recommends if you are interested in that. As well as the PiP and more tuners like you mentioned.
It also wouldn't suprise me if more features are added down the line that might take advantage of the newer hardware in the HR34, that the HR22 might not be able to do.
It also wouldn't suprise me if more features are added down the line that might take advantage of the newer hardware in the HR34, that the HR22 might not be able to do.