i would advise you to go for a brand new car, new is always better be it Suzuki or mercedes.
Cultus is about to be discontinued so you should remove that from your list.
stay away from Faw.. quality is very cheap and future is uncertain, if they packup over night, you wont be able to sell you car for half the price.
In my opinion, you should go for WagonR, you should give it another try, its not unstable.
plus it built quality is best in Suzuki lineup, and very fuel efficient.
pick and Ac is awesome
interior is beautiful and its Resale is good too now.
new means trouble free for 3-5 years if you go for periodic maintenance.