Somewhat tempted by the Dragon Age pack...
If you loved BG2 (party-based strategy-RPG), you really owe it to yourself to play DAO Ultimate.
I had around 105 hours w/ DAO, then around another 30 hours w/ Awakening.
Can't speak on DLC - I ain't touched them, even though I do now have DAO Ultimate (and have had Ultimate for years).
I have DA 1/2 on Xbox, but find myself debating getting it here. Apparently the computer version is the clear best one there is (at least for DA1, not sure about 2), and with mods and the like I'm sure you could make it look at least marginally less poopy on PC. Plus w/the voucher it's only 8 dollars...I feel like I'm gonna wind up talking myself into this before the sale's over. Although I've already played DA1 twice...I should probably just wait. There'll probably be some bundle deal when Inquisition comes out anyway. Mehhh decisions.
I can't speak for the gameplay on DA series on PC vs. consoles, 1st hand.
DAO - It's widely known in reviews and from players that PC version has additional overhead tac-cam and is more tactical. I loved the tac-cam in DAO.
DA2 - if we talking technically on the graphics side, the PC version supports DX10 and DX11. So, if you're on a DX11 video card that has at least 1024 MB of VRAM, just make sure you get the High-Res Texture pack.
For more info, click below:
That Dragon Age pack is the cheapest I've seen it. Amazon had it for that price once, but every time since they've had it for higher. If you want the pack (and you should), buy it now.
Now all we need is a Dragon Age 2: ALL DLC Only Pack
With the way BioWare and EA are - we're dreaming here, I know... :(