I went through a very similar situation last year. I had a P5 and got to talking with someone who took over the store of the guy who sold me the P5. Starting from a conversation of rewiring the arm from the P5 (RB 700) to upgrading the arm (which I did to the RB880) to finally giving in to the P8 which includes the RB 880. I can tell you this: The arm made WAY more of a difference than the table, even though the P8 looks cool and has a better platter, etc. I don't necessarily regret paying much more for a much lesser improvement, but I think if you want to be as value conscious as possible, spend that extra $1500 on a good phono stage - you didn't mention what you are using. I did that after the turntable upgrade and was once again blown away with the improvement. I think if the table is spinning at the right speed (you have a PSU) and is properly isolated, the table is less important than the arm or the cartridge/phono stage, and is typically much more expensive.
That's what we're all after - NOTICEABLE improvement. Beware of the law of diminishing returns, and have an end goal in mind, or at least an intermediary goal in mind.
That's what we're all after - NOTICEABLE improvement. Beware of the law of diminishing returns, and have an end goal in mind, or at least an intermediary goal in mind.