Well that was depressing. Even with the overclocking I tried using it for about 3 hours straight and be productive. Once I abandoned that idea I started to look for entertainment and that was just as bad. Chromium would crash and burn if I tried to stream anything so I decided to pull some files from my NAS to play locally because I tried streaming music from Grooveshark, but Chromium kept closing itself even if I tried to re-open it after it crashed so I switched to Midori for basic browsing which had noticeably increase loading times for websites I visit regularly. I finally got a media player installed that let me listen to music and it was a good experience, the audio quality through the HDMI cable was good and playback was smooth and responsive. I found out that the volume control in my taskbar was just for show. I gave up on video playback after having less luck getting a GUI installed. YouTube was horrible at all resolutions (240p stuttered on fullscreen). I was tempted to switch to wired internet, but 30Mbps should be enough for normal usage and the wireless connection was stable without any dropped connections so it had that going for it. My RDP experience was still just as good as before though so the RPi2 is still top of my list as a thin client.
I switched over to my C1 before heading to bed to see just how different the experience was after spending 3 hours with the RPi2 and it was unbelievably different. My first test was to go onto YouTube to run the same videos to see my experience (wired network vs wireless though) and that was like night and day. Watching the same video in fullscreen at 480p was smooth enough and watching at 720p windowed was even watchable. My TV is only 720p so I just grabbed a bunch of video formats from my NAS and the playback for all of them out of the box, without any adjustments or installing any software, was great. No hiccups, no distortion, and best of all it didn't max all of the CPUs so I could still multitask to an extent (running Kodi fullscreen with some HD test videos caused the mouse to lag but the video wasn't impacted and remained running smoothly). My NAS has a built in web GUI which supports audio and video streaming if you have Flash installed which I did so I started watching a video I could find on my NAS that streamed (MP4 worked nicely without VLC) and it played nicely. Couldn't get VLC player to work, but with all of the media players than came pre-installed I was fine with that. Audio playback was just as good as the RPi2 and the volume could be adjusted in Lubuntu so that's a plus there. Web browsing was perfect, no issues to speak of and no crashes when a site was overloaded with ads or images. I ended up overclocking the C1's CPU from 1.5GHz to 1.7GHz just for fun since I had bought the heatsink addon and the temps were on par with the OC'ed RPi2 without a heatsink according to the internal sensors. The one thing that annoys me to no end with the C1 is that damned micro HDMI port, I can't find a cable or adapter to fit in it that isn't flimsy as hell and causes the video to drop if you breath on it wrong whereas the RPi2 can be dropped from my desk multiple times (as I accidentally test multiple times every time I use it) and continue working normally without missing a beat. Lastly, I decided to RDP into my Win 7 VPS and the experience was the same as before, usable in a pinch but not as good as the RPi2.
It looks like the RPi2 will be better used as a headless box or as a thin client. It might make for a good HTPC but the C1 would work better.