There has been some very good results (hand polishing) with G-Techniques range of polishes. I do own some but not used it yet so cant comment but i have seen a good video on YT being used and seems extremely good. I,m always polishing by machine and some of the polishes used aren,t suitable by hand although i can recommend Menzerna 203s with a good hand applicator with brilliant results. After polishing especially on darker cars i now use Poorboys creme -z its a glaze known as a cleaner glaze and filler . I find it so much nicer to use than 'black hole' although that is superb also. A cheap decent wax and that will aid looks further is PB Nattys wax (blue) they do a red one too for other colour types but you could use them on any colour.

Mike