I can't believe I ignored Kreg jigs for so many years. I thought they were gimmicky. I finally realized how many of the guys I follow on YouTube were using them to great success, and one video in particular convinced me of the speed of making cabinets with these things so I ordered the K5. The first project I needed to do was a rigid bed slat type thing for our new IKEA bed because I couldn't believe IKEA wanted $80 for one. I made it with this tool and less than $20 in 1x4 lumber. It was done in barely over an hour including cutting everything to length, chamfering the edges with a finger plane, drilling the pocket holes, and assembling with a face clamp.
I am remodeling my garage into a proper workshop with custom cabinets instead of the repurposed ones I've been using. This thing already paid for half of its cost on the first project, and the rest will be paid for in the first cabinet I build. After that it will just continue to buy me extra time and productivity.
I just wish I had bought it sooner. It sickens me to think about the amount of time I could have saved on countless projects over the last few years if I'd already owned one of these, or any previous generation.
My only two nit-picks are that the quick release button to adjust the thickness of the material is stiff and awkward (and it would be great if there were a few indexed marks to quickly set for different material thicknesses without doing the trial-and-error method, but this is still FAR faster than the previous method with a screw and jamb nut), and I really don't care for the little stepped drill depth stop template thing. Very poor design. The template that was molded into the K4 is CLEARLY a superior system because there are no pieces to lose and no need to fumble with multiple pieces to use it. Even if this extra 2 cents worth of injection molded plastic were deemed worthwhile to some designer or marketer, there is no excuse for actually removing the old design from the new clamp. It could have been molded into this just as well as it was on the K4. For that stupid decision I am docking a full star. I'm tempted to dock more because it really is that stupid, but the rest of the functionality of the thing is easily worth 5 stars.
Even with that flaw it's still worth it because of the drill-side clamp lever. That makes it immensely easier and faster to use than the old reach-around.
While we're at it, I wish it didn't cost so damn much for the micro and HD templates. This is a substantial investment considering what actually shipped (not to be confused with the actual value of having it), and the additional pennies worth of plastic and dimes worth of steel could have been included at $10 more to make this a complete system. Oh well. That's capitalism and I ordered them anyway for an extra $100 to be able to use all sizes. I'm irritated at the price for those accessories, but delighted with the overall functionality.