Sure... i'm a Troll
. I think I've been around here long enough to not be a Troll. I've learned a lot here, and I've given back as much as I can within my scope of experience (not like that's a ton of experience).
But yeah, the biggest thing for me is the workflow. 2.0.5 has some updates that has it more stable on my system than the others. The first v2 release crashed a lot on my system as well. Stuck with it and now it's pretty smooth. I give 'em a pass since their only on version 2 lol. Support is so backed up it's non-existant, so it's recommended to use the forums. They respond quicker there.
Cubase might have every feature possible in a DAW.... so it's like I said, if you actually use those features then there might not really a reason to switch. But I get practically anything I need to do, done in S1, and done quicker than other DAWs. It's got an ease of use about it that's refreshing. Very intuitive. It's WELL worth trying out the demo. Again... I didn't want to like S1 lol. It just made sense. But yet in still, I wasn't married to Cubase at that point. If I were married to Cubase, I might not have switched DAWs. I still wanted more out of Cubase 5. I wanted to add an instrument without my audio skipping (as silly as it sounds... that was a big deal for me... it destroyed my groove and had me thinking something was wrong w/ my setup).
But i'll say it again.... you can work quickly in any DAW lol, provided you know what you're doing in it. Most people who switch do it b/c of the workflow and how much easier they can create songs and mix tracks. Most people who don't switch, it has to do with better controller support in their DAW, and needing an extensive amount of tools to edit midi & audio. S1 has all the features you need to accomplish any task you need (it's not like you can't do it in S1), but some of the users do complain about wanting more midi/audio editing features. I'm sure more are on the way... but the basics are there.
Also, I forgot to add that S1 can't render video. This pisses me off a little bit, b/c I have to use a 3rd app to render a final video product when i'm scoring. I can create the music in S1 and load the video i'm working on so I can make it on time, but i can't export the video (WTF MAN?!)
So yeah, all-in-all, I have no experience w/ Cubase 6.5. I'm sure it's amazing as well. Again, if S1 didn't come around, i'd still be on Cubase. It felt easier to use than Sonar (before X1), Mpowered ProTools, Ableton, and Reaper... for me. This is just my opinion on S1 v2 vs. Cubase 5
It's all subjective in the end. Use what works for you. I'm just overly excited about my DAW of choice.