if you get the other series be careful with loading them. i got SF2V for Christmas after having SF2E since its release. the Dec patch seems to have caused a Prob with merged install so SF2E is in a Thirdwire folder in my C drive and SF2V in a Thirdwire2 folder. one of the biggest issues i recall with merged was objectdata3.cat file which couldnt be read by cat extractor and somehow made all E model Phantoms dissappear. as for 2nd Gen in general it kicks a$$. as i like to say WOE is like watching MASH on vcr tape, SF2E like watching House on Blu- ray. both great doctor shows but the newer comes out a bit better.
oh and make sure to take SF2E off and load in order if you get other titles.