Pass amps: newer xa30.8 or older xa60.5 ?


I'm always intrigued by choices we have as consumers when companies introduce new models after a successful run of a popular lineup.

In this case we have the choice in the used market between the newer .8 series stereo model going for about the same price pre-owned as a used monoblock set of the highly regarded xa60.5.

Which would you choose?
abrew19
Tomcy6, you may be right. However, I have seen recent ads that show all of the models listed as .8 except for the X350. The X350 still shows .5 while the others are listed as .8.

Abrew19, I think all I ended up paying for was the shipping costs. Reno is the best, and I wouldn't hesitate buying from them again.
No I have not auditioned a .8 series myself at least not yet. About 220v best to just call them up or email them I guess.
I currently have a pair of Pass 160.8 monos for demo from Reno HiFi. I bought a Pass Xono from Reno in '07 (great deal and great phono). Back to 160.8s; Today is the start of day (10) Everyday they have gotten better!! Driving them directly with my Manley Steelhead. Not a pop, buzz, hum, "burp" Mark sent them and did not hear from him until I sent him an email. No pressure,No hype! Offered a great price per Reno website and "sweetened it a little." 
I am a 20yr Spectral owner/user; including the Spectral 30SV pre/line amp w/pair of DMA 360s and ALL the required MITCABLES, PCs and conditioners. The 30SV did NOT want to "play well with others " Sent 30SV back (full refund) cancelled order for pair of DMA 400s. Total= &44,000.