It's totally your call buddy.Usually the modded Playstation 2 sold at all locations are pretty stable & last for more than a year or two easily.Unless your luck is very bad & if the dealer has cheated you then perhaps you might be in for trouble.Apart from that doesn't matter much.If you want my advice go for the Indraprastha one as it's pretty near & convenient for you.Plus you can easily take it up to them if the console coughs up with any issues.
These people usually sign on each accessory that you purchase from them.Hence atleast it validates your purchase.They had even signed my free GOW 1 & 2 DVD stating if anything was wrong then I could replace that with another one.Though I didn't fancy much about the disc but I clearly mentioned if there was anything wrong with the actual console then they had it.
If I were you I wouldn't mind paying 500 bucks extra for getting it from a possibly genuine dealer.Then again that's just me.At the end it's your call & money.
@Krazzy: I believe I have got the correct GOW 2 DVD.Hopefully should be able to cross the Great Chasm level.Most of my friend's have got atleast 2-5 DVD's to no luck.Then I asked this shop guy who said he had got the similar issues but then it got replaced with this DVD.It mentions 100% on it's front cover.Did you try it out?