Decisions,decisions….to purchase the Oppo-103 or 105,my Denon 4311CI is in the shop,my retailer stated if it can't be repaired I could upgrade to the Denon 4520CI.Thinking of selling my VT50 as soon as the PZT60's come out…got hundreds of Blu-Rays and ripped,movies flac files unto external hard drives.My satellite PVR would connect through either one ….I'M SO CONFUSED
Sounds like you've got lots of decisions on your plate.
The main reason to get the 105 is because you want to get serious about using Analog audio output from the player. The 105 has a better Analog audio output solution. Video and digital audio (e.g., HDMI audio) is identical between the two players. Both player play the identical types of discs, attached disc media files, network accessed media files, and internet services.
Secondary reasons to get the 105 would be its Headphone jack, additional types of digital *INPUT* jacks (Asynchronous USB DAC, Optical and Coax S/PDIF), and the ability to wire stereo Analog audio output independent of multi-channel Analog audio output. Both the 103 and 105 have two HDMI Input jacks for attaching external sources you'd like to pass through the OPPO.
Both players have no fan. The 105 is larger -- so check you have enough space where you plan to put it.
Note that using multi-channel Analog from the player may mean you have to forego various types of value-added processing in your AVR which would otherwise be available if you used HDMI audio. For example, Audyssey room correction. Check the AVR specs for what it can do with multi-channel Analog input. If you find you are going to be using HDMI audio essentially all the time, then you might as well stick with the 103. If you think you might want to move towards an Analog audio setup down the road, then you might want to get the 105, now, anyway in prep for that.