FWIW- I also love the user interface of the Pansats. Actually seeing the channels as you edit the channel list or review scanned in channels(9200 and 3500). I can't say if that's still true with the 9500, I don't have one. (I think the 9500 and S9 are closely related)
1)Price(?). S2 'out of the box' with the 9500. 9200 requires a S2 module that's near the price of the 9500, unless you get lucky and find one with the S2 module in fleabay. Usually the privately sold units have the hacker board.
2) Heat. you can keep your mug of HC or coffee hot with the 9200. Mine required a fan. Heat sink mods-alternatively.
3) Stability. 9200 becomes unstable when nearing 1000 channels in memory[at least mine did, when near 800 it was time to delete]
4) Age. Don't expect any further development in 9200 FW. (The clock still SUCKS)
5) Scan speed. Think my Openbox is at least twice as fast as my 9200.
6) 9500 uses common USB interface for DVR-HDD, 9200 uses eSATA.
7) 9200 included audio codecs are not as complete as the 9500(?) My S9 get's the audio on all fta channels. My 9200 did not.
8) Not trying to dissuade you from getting 'hands on' experience on the 9200, but if you're looking for a convenient, trustworthy unit, I don't think the 9200 'fills the bill' today.[IMHO]
Don't get me wrong here, the 9200 was my 'workhorse' for a long time. It rarely missed a channel. My S9 misses more than I would like. After a blind or Accurate scan, a Preset(TP) scan, almost always finds a few more channels.(I had forgotten about that until reminded in a thread a while back)
Sorry I can't comment directly as to the 9500. I'll leave with just saying I think the S9 and 9500HDX may be closely related, and therefore may be comparable. Owners of both Pansat models, it's your turn to comment. I would have been one if the S9 came out well after the 9500HDX, but that wasn't the case.
.