ive payed all fal out games from 3. and all the add on missions too. I thought 3 had better gmeplay, but vegas had a good story line. I was unsure about 4 to begin with, but after about 35 hours into it im starting to get into it. definitely do the side mission where the robots are trying to get their galleon off a building. is quite hilarious when you help them eventually get it off.... in goodneighbour the silver shroud missions are pretty fun too. I use the power armor constantly- I found a stash of fusion cores in one building- 14 of the things! plus you can buy cores on the predwyn or from tinker tom in the railroad headquarters. I like the way enemies behave quite differently from fallout 3- feral ghouls being one of them: the way they are so aggressive in how they launch at you- often going so hard they fall over and scramble to get back up again. also your companions can grab them and flip em over on to the floor is cool... the super mutants have a few different varieties too. I love the suicide mutants- if they see you they just run toward you as fast as possible with a couple of p-r-e-t-t-y decent bombs. the death claws also are definitely not a 'point and shoot' enemy- side stepping pretty randomly as they close in on you. thank god for the fat man.... I'm loving the game more and more and am expecting to put at least 100 more hours into it...