Yamaha PF-1000 vs Systemdek IIX ?


I am thinking of purchasing a Yamaha PF-1000 turntable to replace my Systemdek IIX. Any thoughts?

My system is:
Systemdek IIX with DL103
Jolida Envoy preamp with phono section
Canary Audio CA-301MkII tube amp
Synergistic Research Designer Ref cables
Acoustic Research AR-9 speakers (1980's model)
Also:
Marantz SA-1 cd
Nakamichi Dragon cassette
Yamaha CDR-HD1500 music server
vernonwtx
The best info I have is from
http://www.thevintageknob.org/YAMAHA/PF1000/PF1000.html#
which says it is a medium mass tonearm with 10mg friction (verse say 20mg for Systemdek Profile arm).

I am not sure how you would add mass. I had a Discwasher DiscTracker on the AC-2, adding +0.6g VTF and forcing counterweight halfway off to balance, but not much difference in sound.

The headshells are hard to find. One went on eBay for $5.00 not long ago (cannot believe I missed that). I finally spent 79 Euro to get one:
http://www.audioscope.net/yamaha-headshell-12-inch-p-1352.html?language=en
has grounded shield that I have not seen in brochures or manuals (which are available at Vinyl Engine). If you find a better source, please let me know.
Headshells: Most Yamaha P-* turntable headshells would fit (P-200, P-300, P-700). You can buy a used turntable plus ship for $40-60 for the headshell.

Thank you for all the help.
I will let you know if I stumble on a good source for the headshells .
Thanks