FE-320 OR mju 760 OR Mju 820

[fcnme]

hi everyone,

i am thinking of getting a digicam. mostly for taking photo of nature.

which is better of these 2 models that i have in mind?

also looking at Mju 820, though i havent checked out the price yet.

here are the spex:

http://www.olympusimage.com.sg/products/dica/mju/1175579_668.html

http://www.olympusimage.com.sg/products/dica/irobe/1176399_1349.html#

http://www.olympusimage.com.sg/products/dica/mju/1175853_668.html

or is there some other brand that you ppl can recommend?
my budget is smtg less than $400.

Please help me. thanks so much!!