I've heard digital dashes are harder to read.
Overall or in one aspect only?
I used to run a digi dash from the old Astra GTE in my Nova days, and it was the one thing I missed the most after moving away from Vauxhall's.
Granted, the Tacho was nowhere near as accurate as an analogue (clock) type, but I found the actual speedo far, far better. An ideal combination would be to run a clock type tacho along with a digi speedo (have a look at Stack, top of the line instrument clusters and they all use this configuration:
Stack Street-Race Dash Display Systems), as seen in race/rally and on pretty much all new bikes.
I'm hoping that due to the amount of steps on the S2000 instruments, the tacho accuracy issue will have been overcome - if not I'll get a separate analogue tacho also.
At the end of the day though, like many things, its down to personal preference (and I love digi dashes). But the only time they become a little more tricky to read is when yiou have direct, bright, sunlight on them - which aint all that often and doesn't have a massive impact anyway.