This probably won't help you decide if it is any good or not, but I'll say this:
This game is really a TON like Gothic 1/2 or Morrowind, in a good way, with perhaps better writing.
Let me explain:
There is this sense of exploration and new, interesting places, that FO3 lacked, but Morrowind had (to me). Then there's the more difficult combat that makes you feel quite weak at the beginning, especially on the harder difficulties - this reminds me of Gothic. In addition, the NPCs are usually a lot more real and have some actual stories to tell, giving the sense that they have their own views and their own agenda, also like in Gothic.
Things are really very grey and it's fairly hard to pick sides or decide what choice for a quest would have the "best" outcome. Many times, the options you can select all have flaws and you will just have to settle for one of them.