Yep, I think we're pretty much alone in here.
The P25 is a nice table and the 600 is a good arm. It is not quite as mod-friendly as the 250, because the modded 250 will exceed the modded 600. The 600 can be considered better in some areas like bearing quality and tapered tube, but the 250 has no spring operated VTF adjuster, which imparts a resonance on the tonearm. The VTF spring on the 600 can be defeated by setting the VTF to 3 grams(factory defeat setting) and then VTF can be applied via moving the counterweight ala RB250. The upshot is that you pay more for the 600, and can get better results with the 250 when it's modded. Also, you may have more trouble selling the P25 with no arm on it, and the used Planar 2 you can just basically toss out since you got your money out of it with the tonearm, or sell for $100 to get some money back.
If you feel like you need the performance of the P25 for the short term, there is nothing really wrong with the 600 arm, and it will mod very close to the 250. So you would not be hurting yourself later with that arm. Or you could just get a P25 and use it, and then sell the whole thing(which would be alot easier to sell), and get the new tonearm when you buy the Teres Kit. Teres is selling Expressimo modded RB250 arms with the Cardas re-wire, SS end stub, VTA adjuster, and drop counterweight, for $475 complete. This is less(or pretty close) than a stock RB600 arm. The modded 250 will significantly outperform a stock 600.
So, there are a couple of ways to go with this.
The P25 is a nice table and the 600 is a good arm. It is not quite as mod-friendly as the 250, because the modded 250 will exceed the modded 600. The 600 can be considered better in some areas like bearing quality and tapered tube, but the 250 has no spring operated VTF adjuster, which imparts a resonance on the tonearm. The VTF spring on the 600 can be defeated by setting the VTF to 3 grams(factory defeat setting) and then VTF can be applied via moving the counterweight ala RB250. The upshot is that you pay more for the 600, and can get better results with the 250 when it's modded. Also, you may have more trouble selling the P25 with no arm on it, and the used Planar 2 you can just basically toss out since you got your money out of it with the tonearm, or sell for $100 to get some money back.
If you feel like you need the performance of the P25 for the short term, there is nothing really wrong with the 600 arm, and it will mod very close to the 250. So you would not be hurting yourself later with that arm. Or you could just get a P25 and use it, and then sell the whole thing(which would be alot easier to sell), and get the new tonearm when you buy the Teres Kit. Teres is selling Expressimo modded RB250 arms with the Cardas re-wire, SS end stub, VTA adjuster, and drop counterweight, for $475 complete. This is less(or pretty close) than a stock RB600 arm. The modded 250 will significantly outperform a stock 600.
So, there are a couple of ways to go with this.