I moved into a Planar 6 a few months ago after a few months with a new Planar 3. I was so pleased I that traded up in just a few months later. I think the price on the RP8 is because it will be discontinued with the release of the Planar 8. Now, let's talk about that!
Rega RP8 vs. Planar 6
I’ve seen the Rega RP8 on sale for $2000, which is $1000 off (not to be confused with the newer and more expensive Planar 8). The Rega Planar 6 lists for a few hundred dollars less and is a newer model with a newer power supply. Since the RP8 and Planar6 aren’t that far apart price wise, any advice about which is preferable?