I own a PC 7424XP. In fact, I used it today for the first time.
My impression:
- The pad jiggles, it does not rotate in a circle like a rotary, when any pressure is applied. Therefore IMO it really isn't a DA polisher. I really just vibrates and oscillates slightly while doing so.
- If you don't apply pressure, the pad rotates quickly spinning the material off
- It did a good job removing very light scratches, without overdoing it.
- Incredible amounts of vibration
I'm already looking for another unit. That Flex 3401 looks really nice, but $300 is just a bit too much, at least right now. I'm thinking of looking at a Rotary unit because it would super smooth to do the bulk of the work. The issue with the rotary is it will swirl, so then maybe hit the finish with the PC7424XP quickly when done to remove any light swirling. I think the PC unit is a good unit to have for the $$, but seems better to light swirl work that you can knock out quickly. I don't even want to waste my time/money on more cutting compounds with it.
In the end, I hate to admit it, but I might just pull the trigger on the Flex unit. The forced turning of the head means it will cut, and the orbital action means it won't hologram. Can't ask for much more. PC 7424XP is around $115 plus $50-$100 for the rotary, plus two different sets of pads, you're looking at almost the same cost in the end probably.
This isn't to say the PC didn't work for me. It did, and it did a fine job with the light stuff. I haven't tried the heavier stuff yet, but I'm not sure I will now, due to it not rotating therefore it won't cut. Plus, the time savings using the Flex without having to using the PC at the end might be worth it.