I have the g10 and the lightweight,the LW super easy carry and the s90v version is an awesome incentive if thats your thing-the only negative I have about the LW is the feel ,I does feel plasticky(if thats a word)but I know the handles really are super durable.
the g10 version I really like it ,got some weight to it, but really makes it feel robust it is a tank-feels like a smaller version of the mini manix(old school)the s110v version is really nice,occasionally you can find a a really good price on it.
My favorite is actually the carbon fiber with vg-10 from Japan ,kind of hard to find nowadays-it's kind of a blend of both the above mentioned ,very light,strong,good steel and beautiful.
go with the LW at first just to make sure you are going to like the ,feel,config.,lock back, etc...and you won't be out to much money.