I'll break this into two posts so I can add my images and not hit the 10000 character limit…
-----
If you scroll back through this thread you'll see that I became interested in the Booster Pak for my brother-in-law as a Christmas present.
Well, to make a long story short, I ended up changing my order to a Challenger Pak for my brother-in-law, and Chris was able to send me a unique, one-of-three (currently) dark purple and black Challenger Pak.
Here's a quasi-review. It's still a gift, so I haven't played with it, but I loaded it up and walked around and whatnot.
I own and have used both a Grip and a ProDiscus bag. They each cost about $250-$260. This cost less, and my own Challenger Pak will arrive sometime in January (I won't need it until March or April anyway), and that decision was only reinforced by getting to play a bit with this one.
The first thing I noticed about the bag was how tall it is. It's about five inches taller than my Grip (which is about two inches taller than the ProDiscus). It's thin, too, and what the height does is make it much easier to reach down and grab your putter, grab the handle, and get moving.
Front of the Bag (zipped)
Speaking of which, the handle is excellent. It's grippy rubber, and though there's nothing "wrong" per se with the Grip/PD style handle, having a true handle is a joy. You don't feel like you're not using the bag properly like you do carrying it around by the handle portion of the backstraops on the G/PD, and you don't have to worry about stressing the stitches of the shoulder pats by yanking the handle around.
The zipper pulls are nice and the platinum color matches the stamp on the putter pouch (which comfortably holds two putters).
Grippy Feet and Bottle Holder Grommets
The material is solid. There are feet on the bottom that help the bag grip side slopes and hills, but the bag seems more prone to falling over - that's simply a function of the height and depth - it's more like a tall glass than a big coffee mug, if you know what I mean. The bag has two water bottles, a mini pocket on the left side, a large pocket (left side) suitable for a stool or an umbrella, a pair of divided pockets on the right (two pockets that can become one big one if you un-velcro the divider), the main storage area, the putter pocket, and a large top area with a cell phone pouch and key ring clip. Oh, and the bag's got several pencil holders and two D-rings near the top of the bag as well.
Materials? I'm not sure where the measurements come from, but they say there's 1 inch of memory foam on the back, 4 inches on the straps. The bag is made of 1065 Denier ballistic nylon (tough stuff man), has sturdy internal frame, the painted aluminum frame, and YKK zippers. I say I don't know how they measure the 1 and 4 inches because it's not like the padding is literally one inch thick, or four inches thick. All I can say is that the bag is STUPID comfortable. It feels like it's empty (it weighs less empty, even with the frame, than my G or PD bags do) when it's fully loaded and sitting on your back.
Top Pocket with Key Clip and Phone Pouch
Chris is a doctor, and apparently he knows how to make a comfortable bag that's easy on your back.
Now, let's talk storage.
As you can see below, I was able to comfortably fit 18 discs in the main pocket area. Two putters easily fit in the putter pocket for a storage capacity (without relying on some tricks I'll talk about in a bit) of 20 discs. With ease.
Disc Count (18 Discs = 6 Drivers, 6 Fairway Drivers, 6 Mids)
(Lace x 3, King x 2, Halo, QJLS, Volt x 4, TeeBird, Buzzz, Axis, Ibex, Obex, Wasp, Comet)