Used what was probably the digi cool proto type when I worked for Doug briefly in 02, very impressive, and I'm sure they are even better now.
But I got a set of yellow jackets as a gift, they were promptly stolen after 1 use. Boss replaced them and I have loved them ever since with no problems in 2 years. I would buy a new set in a heart beat. I treat them like everything else, into the back of the van. I just purge the line with each new gas. I don't buy into the cross contamination theory (Lee Harvey worked alone).
I don't think you can lose with either brand. Jump into the future, don't wait for it to leave you behind. Digital is here to stay (unlike r22).