I have the 1st CAD pack that you referenced. They are of decent quality. I use them for live gigs and for PA use they are fine. I have a few SM57s and in my music room where I practice through my board and in my headphones I can hear a difference between the CAD and the SM57 on my snare. On the toms, comparing with the SM57, I can't really tell a big difference, except that similar to the snare comparison, I think the CADs lack a more "full body" kind of sound.
Live, with all the ambient noise and varied mixes this subtlety is lost. My guess is that the CADs capture the mids and highs well and are probably lacking in bottom end. For the money, not a big compromise.
The all in one mic-and-mount on the dynamic mics makes them small and quick to set up and I don't have any issues adjusting them for all the toms. The snare mic positions well on 14 inch drums. When I use a 13" snare, it get's a little crowded and I'll bump the mic every once in a while with my right stick picking up to go to a tom or left side crash. If you set it back more to compensate, you'll pick up a little more bleed from the hats.
You might not find this a problem but I mentioned this because I think these CADs perform better very close to the drum heads as opposed to a more conventional position of 2 to 3 inches away. I seem to get better results around 1".
The kick mic is OK. Nothing special, but for $28, I would have to say it's pretty good. I have a D112 that puts it to shame. Unfortunately, I had a cup of beer kicked into that mic and that's why I bought the CADs. So, if you play in smoky clubs, outdoors or with a reckless bunch, these mics are great because you won't worry about ruining them. The CAD kick mic doesn't scoop out the mids as well as more expensive mics and so I use mine with an Earthworks Kick Pad and it through a PA it sounds as good as my D112 (used to) or my Audix D6.
Picture of the CAD kick mic with the Earthworks Kick Pad - my instant kick drum sound secret weapon.
The condensor pencil mics are pretty good. The pad roll off gives you a 10db cut and it's noticeable. They're pretty well matched and my only criticism is that they are little bright. If you've ever used an SM81 which has that full range, clean and almost warm kind of sound, the CADs will sound bright and thinner. Any sound guy worth his salt can warm them up a bit and in all fairness, through a PA they're fine.
These mics are similar to some other inexpensive mic packs. The Samson mic pack comes to mind. If you've already got better mics in your tool box then these are great because they are gig friendly and you're not putting more sensitive and expensive mics at risk. I bought an MXL91 pencil mic to use for my high hats but you can certainly use one of the CAD overheads for your hats and the other as a single overhead. Just as effective in most live situations.
If these are going to be your only mics, I would probably spend a little more and get a better set. In the studio all their shortcomings are much more apparent.
I hope this review helps you.