I ran a latex 570 for 5 years and just switched to an r5070 a few weeks ago. This is my first resin machine but I can give my first initial thoughts about it.
First things first I will say that to me, the HP has better "quality of life" aspects to it. Things seems to be a little more clunky and less streamline with the r5070. For example, the take up roll on the epson is so close to the floor, so taking off larger rolls can be cumbersome. I also really miss the fact that the 570 had an internal hard drive, which would allow me to queue up multiple print/cut jobs to print continuously. With the epson you have to wait until the print job is complete before doing the next. Also, print profile selections are more limited.
As far as color/consistency goes Epson is definitely better. It can hit colors like grey way better than latex can. In higher pass modes the quality is great.
Also huge first impression is that the Epson has a much better build quality. Very little plastic parts, very nice pinch rollers, even the platen is metal.
Like I said I'm very new to this machine but these are some of my first impressions.