The Kreg K5 Jig is an excellent jig for pocket hole joinery.  It's easy to use front loader makes clamping your pieces quick and simple.  The attachment boxes on the side keep your wood pieces stable.  The K5 makes it easy to size and setup for various width pieces with the included accessories.  Anyone who does a lot of pocket-holes will find this an excellent jig.  I have said this before, and it's true; I'm a huge Kreg nerd.  Kreg hands down makes the best products for woodworkers and the difference is you can tell these guys actually eat their own dog food.  That is to say, I really believe these guys are real woodworkers and actually use their own products.  I hope this review is helpful and I have more pics and videos over at: www.woodlogger.com

There are various K5 kits available, but with the basic K5 kit I have it included: K5 Base 2 Extension Wings Dust Collection Port Spacer Block Stop Block Drill Bit Block Drill Bit with stop collar Driver Bit - 6" Starter Screw Set, and Guide Book
The K5 Base includes an adjustable drill guide block (seen here set at 7/8" thickness).  Wood pieces are held in place between the clamp, and guide and held in place by pushing down on the front lever.
	The extension wings which can be attached to the side of the base are excellent for storing bits, accessories and guide blocks.
	Included with the jig is a 6" driver bit, and stepped drill bit.
	The drill bit setup block makes it a snap to set the stop collar on the drill bit.
Included with the jig is a handy stop block which is attached to the base.  This allows for more accurate and quicker repetitive pocket holes.
The K5 Jig with both extension wings attached make it great for keeping work pieces stable when drilling pocket holes.

Overall the Kreg K5 Jig is a really easy to use product.  It feels rugged enough for the casual woodworker.  A big plus is how sturdy it feels.  Some of the other jigs I've seen are a little flimsy and don't include very good instructions (if any at all).  If you have a project where you'll need to drill pocket holes, I think you'll find that the K5 does an excellent job doing this.  It's reasonably priced at most big box stores that sell Kreg products or online at amazon.