The game satisfies the dollar per hour fun ratio, although I don't think everyone would want to pay the full price for it. If you can get 25 % or more off, then go for it.
A lot of people are comparing D:OS2 and W3. That's, of course, mostly outside of NMA, but I guess I can talk about some of that if it helps folks make a decision. I think both of these titles are relatively similar in terms of how good they are as games overall. I am not a particularly big fan of D:OS2, but I don't ignore what the game did well.
Visually DOS2 is better and it generally runs a lot smoother than W3, courtesy of the Infinity engine inXile used. However, I do think that D:OS2 goes full ham in terms of how good it looks graphically, especially since other areas of the game are lacking(maybe because of that, maybe not.) That said W3 still looks good. It has great environmentals and effects, and the world map is a joy to traverse.
Both are excellent when it comes to their soundtrack, but W3 is bolder as it's artistic choice makes it stand from the crowd, whereas DOS2 is more on the generic side of things.
The voicing in W3 is excellent. The majority of the characters' lines are expertly delivered and it really helps to communicate what type of people you're dealing with - bloodthirsty maniacs, scared refugees on the run, revenge-driven weakling, hardened wasteland survivors, ect.
In terms of story I prefer W3. DOS2 is great in its beginning acts but falls flat later on. W3 manages to be more concise and consistent all from tonal, lore, world-building and story-telling perspective. There are some flops along the way, but those are relatively minor.
W3 manages to paint a decent political picture with some great and believable characters along the way. It doesn't bombard you with a lot of details, rather gives you the essentials and lets you plough on. You're starved on how you can react to it all from the perspective of the player, but that's more acutely felt because the world of W3 is well presented. What I mean is - because the world and characters feel so believable you do want to leave your imprint as the player. Unfortunately, you don't have that many options in term of choice.
Gameplay-wise W3 remains more consistent as the hordes of drools, Payasos, Godfishers, robots, ect., remain much deadlier in comparison to the strength of the player than anything DOS2 can throw your way. There's even some basic dungeon-crawling with traps, minor puzzles to solve and money, ammo and healing stuff are generally tight for the majority of the game. Drugs, consumables and the various bits and bobs that can be used during combat have significant impact, but you also have to be careful how much you spent in a given encounter. It is easy to go over.
W3 strikes a middling position between a hardcore crpg and a more simplistic, casual one. You generally can't fail when building a character as mostly any stat is useful for any character(the Pillars of Eternity mantra), provided you remember that Strength increases melee damage and not ranged one. You won't have enough points to put in everything, but as long as you take account of what a certain character is better at - for example running quicker, building special attack quicker, not being able to take critical hits, ect. - you won't have significant road blocks. You will still have to be careful on the higher difficulties of the game. Me, being a rpg vet had to reload the game twice due to failed combat encounter on it's highest difficulty, but I suppose millage can vary here.
All in all - this game is suitable for the working guy, fan of the post-apoc rpgs of old. A very thorough play-trough will take about 60 hours, but you can very well complete the game in 40 or less.