G'day Kagey
Our local SUP dealer is a GSI man so my wife and I use their product.
I started off with a Southpoint Kalama, and as with many people who started with a Kalama I have a soft spot for that huge, heavy, handleless behemoth.The Kalama 11'6" will have a place in the SUP hall of fame because it simply got so many people started.

Now the Waldens.
She has a Walden 9'11" because it is light and easy to carry. She is a novice surfer and the Walden gets onto waves easy and is forgiving, but gives encouragement for risking turns. The glide on still water is way out of it's class. They paddle easily as fast as 11+footers. This was shown by a Walden 10'10" coming second or third at the Snowy 3 km paddle ahead of a couple of dudes on naish Glide, C4 Vortice and PSH 12 (sorry to bring that up guys[}:)])
I also have a Walden 9'11" for Surfin!
They might look a bit different but they WORK!
If anyone ever get's the opportunity to test ride one of these boards,do it.
The 9'11" is a very different beast to the 10'10'.
As you can tell, I like em'.

Jack