I have an LG Combo Blu-ray/HD-DVD drive, this one to be exact
http://www.newegg.com/Product/Product.a ... -_-ProductCame with Cyberlink PowerDVD trial edition/oem whatever want to call it, not the full version
First big complaint, the DVD software that comes with PC's is not full version, unless this has change in the last year as I still cannot get it without 'paying' $100 for it, is the fact it does 2.1 stereo sound no option at all, to upgrade the sound quality, while not horrible, thats a big feature on Blu-Ray's is lossless audio and true 7.1/5.1 DTS which do not get with the PowerDVD.
Everytime there is an NVIDIA Driver update, I have to update the driver or it refuses to play. So far I havent had any issues with any Blu-ray's but also I am running AnyDVD as I love my non-hdcp monitor, refuse to give up my 16:10 damnit! So I have to have anyDVD just to run anything, as no HDCP.
Besides those few issues, it plays everything i throw at it, be it HD-DVD or Blu-ray, last blu-ray being Sherlock Holmes I got 2 days ago in the mail and works fine. But $150 drive should do full aspects of Blu-ray when its a blu-ray drive darn it! I have hooked this up to my TV/AV Receiver as well and still only get 2.1 audio do to the software limitations.
I have had quite a few issues with Cyberlink PowerDVD refusing to play movies because it needs an update, and doesnt want an update and there download utility is god awfully slow.
I havent had that issue in a couple months, but since getting a PS3 I hardly use my PC Blu-Ray anymore.
I havent dug around in a while, but to my knowledge there is still no free Blu-ray player software. I know VLC was working on it, but does not appear to be available yet.
This is also what really stopped me from doing an HTPC, was the software cost's. As Caleria mentioned, I can update PowerDVD so I can get the 7.1 sound, but not worth $100 IMHO.
I have had this drive since about February/March last year, any specific questions just ask.