Answer to your first paragraph:
Samsung Galaxy SL I9003 is different than the original Samsung Galaxy S i9000 in display and many things i dont want to go in deep
Comparing Sgs sl camera with n95 its better that you should check out these sources
1) SGS SL review on gsmarena picture quality
2) SGS sl review on techradar
Most important source is
3) search SGS sl picture quality and video quality on youtube
( youtube pe normal users upload karte hai so you will get idea )
Answer to your second one
if you need simple phone then C7 is the way to go symbian tu har admi ko rata howa hai so har koi easy fell bhi karta hai its an old OS
Galaxy ACE camera is good but video recording resolution is limited
C7 ki camera 8mp hai E7 ki bhi and E6 ki bhi c6 ki bhi same sensor use kia howa hai jo fixed focus hai not a auto focus but c7 720p video record karta hai and n86 ka lens wide angle pe hai jis se aap kafi space image me capture kar sakte ho so definatelly c7 ki quality n86 se kam hai
Answer to you third one
Touch and type ki value below 11k hai hyderabad me because i have heard and seen many c3z and x3z touch and types claimed in nokia care shayad is liye market down hai
i would suggest you to check out your local market for real idea