Rega's best value is in its tonearms. The P8 comes with the RB880, which is fantastic. I had a P5 and upgraded the arm from the RB700 to the RB880 and was blown away. So much so that I then upgraded the table to the P8, which didn't have nearly the stunning impact and cost about double after trade ins if I recall). But it does look pretty cool.
Can't comment on the speakers, but the source is the most important component and it actually decreases as you go down the signal path, contrary to what 90% or the posters here claim. If the signal is distorted to begin with, no preamp, amp or speakers can correct it.