Eh, even then, you're much better off quickly reading up on what beats what. You should make the decision on what specs you want before you go looking in stores. Also, it's not a linear score. Something might need to be twice as fast as something else to get .2 higher. In other cases, not. It's too unreliable.
Re OpenGL, AMD is usually much better, but it all depends on optimisation. For certain OpenGL programs (and OpenCL Programs) the vendor has worked with Nvidia to make it better, but from what I've noticed, when Nvidia is better, it's by a small margin. When AMD is better, it's by a massive lead. I couldn't tell you for Intel, but I don't believe it's too bad for openGL. Have a look at some benchmarks of programs you intend to use.
Depends on what you're using to transcode, but two things to note: firstly, for dedicated transcoders (handbrake and the like) they will mostly use as many threads as you can throw at them. For those, quads are great. Secondly, if you have software that will use it, Intel's Quick Sync can drastically improve transcoding. So that's worth a look.
On the other hand, the AMD APUs are going to be 50-100% better for gaming, but neither is going to work for 1080p. The other option is a desktop build with an i5 quad and a Nvidia 550/AMD 7770. Desktops are much better value for money (and you already have a screen/keyboard/mouse, don't you?) and more upgradeable. Means you can also use a SSD OS/App Drive and a separate storage drive.
WEI scores are absolutely useless, for the record.
The Trinity APUs are pretty underwhelming, although a desktop PC will be a much better option if you don't need portability.
Core i5/i7 for notebooks really depends on whether or not you need a quad-core. In fact, even the quad i7s are a decent speed now, so still deal well with lightly-threaded loads. The original mobile i7s were 1.6Ghz, when the i5s were 2.4GHz (usually), so the i5s were much better with single threaded stuff, but now you have like 2.4GHz+ i7s, so there's no reason to avoid the i7s other than cost and battery life.
What is the purpose of the PC that you need? Gaming/productivity/editing/programming/etc? Portable or not? If not, normal-sized PC or does it have to be small form-factor?
I have a tough slip-case that goes into my backpack. Works well enough.
Re the Roccat, most 15" laptops have 3 USB ports, so you'd still have the two free like you have at the moment, once you change to another laptop.
You're not going to find any other Bluetooth Gaming mice, because it's an oxymoron. Bluetooth is slooow. If you don't mind plugging in the Orochi when you get home, you're using up a port then. I doubt you'll need more than 3 ports when you're out. Fully up to you, though. Either is fine, just the Roccat is a LOT cheaper.
Browsing the web, searching for reviews and hands-ons... search engines are very handy, no? Sometimes I have to take into account local availability so that the shipping cost is $0 since I can just walk in and buy it. Hehehe. Instant gratification, too.
In the meantime, I seem to got more than what I've bargained for. Gonna get used to accelerated AND natural scrolling now... Three buttons isn't good enough for any macros, though, so I think a proper gaming mouse is needed for them.
Thank goodness I always use a backpack when I travel with my laptop. I don't like carrying cases at all. The Air feels like it wasn't there in the first place, but I wonder what would it be like if it were a standard laptop.
Speaking of OS X, the Air is now again a dual-boot machine, just like before. OS X and Windows living side-by-side, but seeing as I don't see much use for OS X (not with the software required to use, making me staying in Windows almost all the time), I think I bought something I didn't really need.
Hmm... I think I'll spend the next week trying out gaming mice! (The purchase will come laaaaaaaaaater.)
Also, I have taken a good look at the Orochi, and it's just not tacky enough with the matte option. There's a reason why I'm thinking of that...
(I think I'll keep the Wedge Mobile for the tablet and when the laptop lid is closed.)
The Roccat looks nice, too, but yet another USB dongle-based wireless mouse? I've got enough ports in use already! If my polling rate and response time is compromised, so be it. Not that it quite matters when you can wire it if you really need it, and I don't think I need that much polling while out...
I think it's been a while since the last time I've used a full-sized computer mouse. Over half a year, perhaps?