What you see is what you get.
As stated previously, all the kamis execute the styles slightly differently--curves, angles, thickness, and other factors.
In extreme cases they might not look like quite the same knife.
And on top of that, one kami may, sometimes, for whatever reasons,
execute the same style in two or more flavors.
That's why I prefer to buy from the forum offers.
When you see the picture you know if a particular blade is appealing to you.
I prefer blades with smooth curves and distinct fullers.
Others like angles best with no fullers.
It's all personal.
In general:
The more weight forward the more the blade is meant to be a chopper.
The narrower blades feel more like weapons to me.
That said, any blade will work for any use, within limits.
But it will take your feeling one in your hand
before you know what you really like.
Start with what looks appeal to you.
Consider chop vs weapon vs all-round.
Since your membership level can't currently do searches,
read back through the forums and archives looking for all the
subjects mentioning the blades of interest.
To see Bill's offers over the months,
"Show Threads" from the beginning,
the click over "Thread Starter" to sort,
then page down to all of Bill's posts--most are offers.
Check out the HI website and the FAQ/history/gallery website.
Lots of organized info on the various styles.
Himalayan Imports Info Site
Khukuri FAQ
Himalayan Imports Shopping Site
Forum Archives
Unless you plan to chop down heavy trees, and you're stronger
than average, don't go over 18" on the first blade you try--
at least not of the chopping blades which run heavier.
Over 2 pounds / 32 ounces is pretty heavy to swing for long periods.
If chopping is important, don't go under 15"--Not enough mass to bite deeply.
A BAS is a good compromise blade; some people swear by it.
It doesn't suit me, feels like an anemic AK.
I don't know the WWII or GS personally.
As I understand the BAS was the blade that replaced the WWII
as more recent standard issue for most Gorkha forces.
M43 was also standard issue for a period, shortly after WWI and
before WWII---And it's my personal favorite compromise blade.
Whatever you choose will please you,
but also whet your appetite for more.
Good luck.
And welcome.