Shucks... Pardon me but I'm really quite 'young' and amateur at
this... All I wanted at 1st was a camera which I can take of some
of the beautiful scenes which happens in my life and post them up
in a blog or something... Yet, at the same time I hope not to have
them compensated with a 'feel' which is really not the same because
of my camera's capacity... Hope you can understand....? 
By the way, I'm also VERY RAW to post-processings and such....
Nah, that's perfectly fine. The discussion's gone off on a
couple of tangents here, so maybe a quick summary might clarify the
picture I'm trying to paint.
First, like I said, the small sensors on compact cameras are not
very good at handling low light conditions. There's not a
whole lot you can do about that except avoid such conditions.
I agree with kopi that being a good photographer will help, but
being a good photographer also means knowing the limitations of
whatever equipment you have, and what tricks you can use to make up
for those. Now there are some compacts like Sigma's DP1 and
DP2 that actually have big sensors, but those come with their own
compromises.
Speaking as someone who quite happily shot with a Canon S1IS for
a few years before going on to DSLRs, I was quite happy with the
results that I got at the time, but years later I do find myself
looking at those old shots and thinking, "Gee, I wish I could tweak
them to improve the image". An example of such a photo is this one
I took in 2005:
This is still one of my favourite "grab at the moment" shots (or
as you put it, "as life flashes by"), but it's a bit of a pity that
the image quality was not better. If it had been taken in RAW
and not JPEG, there's more I could have done today to clean the
image up.
I understand where you're coming from right now, but from my
exeprience I'm just presenting the need to consider future-proofing
your shots to some extent.
You don't necessarily have to shoot in RAW. You can set
the G10 to shoot in RAW+JPEG (which will take up more space but
afford you more flexibility), or you can set it to shoot
exclusively in JPEG. The point is that the options are there
should you choose to use either format, and if you take RAW shots,
down the track you can go back to tweaking them once you've learned
a thing or two about post-processing - until then you can just save
it as a JPEG without the tweaks.
As for the lambency diffuser, it can work outdoors, but the
range isn't great .
