Though I haven't used any dual sim but samsung e1252 seems to a nice option...many of friends are using videocon phones,they are also very good.
Please don't go for Spice,micromax,lava,karbon etc as the phones are not at all durable.
Videocon, Spice, Micromax, or whatever local brand you say. most are chinese branded mobiles & should not be trusted. yes, some are good like Micromax Andro (rebranded ZTE Penguin), Spice Android mobile (10k, Android 2.1. forgotten the name. same as Motorola XT3), etc are good. but don't take any of these brands blindly.