Paterson Aculux2 at higher dilutions

I use Aculux2 at 1+9 dilutions on 35mm with good results. Just wondered what the benefits might be of diluting to 1+14 and 1+19 in terms of grain, sharpness and control of contrast? Is there anyone out there using it at these greater dilutions and how do development times vary compared to 1+9 dilutions?

Any experiences would be really interesting. Many thanks

Paul