Optimum Polishes are very user friendly, have long working time, and are easy to remove.
However, on a single stage red Toyota that was in bad condition, I found that with a PC, that the Meg's 80, Optimum Polish and even Optimum Hyper Compound did all about the same on the surface even with cutting pads (Excel orange pads). However, the DACP, I think Megs # 83 made a noticable difference just with one pass. However, I HATE THIS PRODUCT as it is very tricky for me to use as it gums up the pad. For me on this particular car, I found it best not to go past 5 on the PC, try to keep the Pad clean, or replace the pad often. But for me, this product is a PITA, but on this particular car, single stage paint in bad shape, it was the best product that I had available.
If you are just starting out, the best recommendation I ever got was to get the optimum polishes, hyper compound and or speed glaze, but the most thing is to get a selection of pad choices. Meg. pads are good. Unfortunately they don't offer any cutting pads for PCs. NEVER use the burgundy pad on a PC unless you know what you are doing. Most detailers claim that will almost permantly marr the finish (although a very few like to use it) I suggest you get a value pack from someone like Excel (Patrick is a great guy) or LAke Country Pads maybe from Autogeek. Get a finishing pad for Wax, a light cut for polishing, and a compounding or cutting pad for getting tough swirls out or correction work. Also certain pads like certain backing plates, so talk with your rep and make sure you have the right plate. I use a 5" plate with my meg. polishing pads and I use a 6" backing plate with my Excel Pads.
(On a side note, the Meg. Burgundy pad is a great cutting pad for rotaries, but that is a whole different ball of wax than a PC)
There is no one perfect product, and talented detailers probably could make any product look good. Your orginal question was will Meg's 83 remove swirls with a PC.
YES, but it can be a PITA product. (I would have a couple of pad selections, and be prepared to clean them during the detail).
Good luck, and don't be surprised if your pad gets gummed up. It's not a fun product to learn on, but it a very effective product once you learn it, or tolerate it. And remember, it worked best for me not to go past 5 (I don't know why) to keep it from gumming up to bad.