Choose 1?
Here’s my thoughts for this imaginary scenario:
Griots: I love their polishes. I`d also be okay with being stuck with most of their interior offerings. I don`t have a ton of experience with their LSP`s. Think their rinseless/waterless are pretty good. You’re probably going to have to choose them just to get access to polishing machines and polishing pads. I think maybe only Meguiars has polishers and pads that also sell a full range of other products.
Duragloss: Hard to beat just about everything that they have, but I don`t know that they have what we would call polishes/compounds, and they dont have a paste wax… bummer. This might be a really good choice if you weren’t doing paint correction.
PBMG/Wolfgang/Pinnacle/DP/Blackfire: any of these would probably be a pretty good choice. They have awesome LSP`s, rinseless, interior, etc. Polishes are probably pretty good too.
Optimum: Intriguing. While I don`t love ONR, I think they have solid offerings across the board that could accomplish just about whatever you need to do.
P&S: What I`ve used of theirs has been pretty good. I think top to bottom, they have a pretty complete line. Maybe not the best in each category, but some pretty strong offerings.
Ultima- Sneaky contender. We dont hear much about their paint correction offerings or traditional sealant etc. A hobbyist could go really far with their products.
Sonus- See Ultima.
Poorboys World- Intriguing- they don`t get much attention any more, but they have amazing products top to bottom. Their polishes have probably been surpassed in the last ~10 years, but its not like they work worse than they used to. Their products just work.
Meguiars- they tend to cater to mass markets, either on the production side, or the consumer side. Neither of which I fit into, so I don’t really follow them like I used to. But no mistake, they obviously have a tremendously complete line with great products. You could also get a Meguiars polisher and pads, so that might be important in this scenario.
3D- Similar to all the PBMG brands, I think. Really complete line. Pretty much everything is good. Think you can get 3D polishing pads, so that might be a plus in this scenario
McKees 37- See PBMG
Koch Chemie- Never used their products, seems like a complete line. Gets good reviews.