^^Yes, Samsung Monte is the best touchscreen under 8k.
BTW manju you haven't mentioned your use?
Dell XCD28 from Flipkart. Android + 3G + Touch for 7300
^But its resistive, which is not too user-friendly to use.
^^^ battery backup of 525 is decent.
Let me make it simple for you - if you want both 3G and Wifi, go for Monte; if just WiFi, go for Wave 525…
PS - I think opera mini doesnt work on Wave 525 (or Bada), let any owner confirm this