The Cyclo is the undisputed workhorse in the world of buffers as you will break down before that thing ever will. Since it has duel 4 inch pads, it keeps heat build up low and is very safe for thin paint. However, it is significantly limited in its abilities because it is:
-Limited pad options and sizes
-Very heavy to hold on vertical panels
-Not as capable in terms of aggressive cutting ability and finishing to the best paint finish possible
-One of the best metal polishers available (probably why your dad speaks so highly of it)
You are much better getting a PC7424 because it is far more versatile, just as safe, more pad sizes/levels of cut available, lighter and easier to maneuver, and will be able to remove more defects and break down polish more effectively because of a higher rate of OPMs.