In hindsight, I would say just get an ROB.
For the stuff that would need an RB, I'd rather save the money, and send it to a reputable, trusted shop and get the car properly polished, compounded, etc.
Then, I would use the ROB, proper carwash method as maintenance. Applying waxes,sealants, or ROB with Menzerna 85RD or 3M Ultrafina.
You would need to go to the shop at most once a year. This is provided you DO NOT send to petrol station carwash regularly, or man on bicycle wash your car daily services.
I bought my Bohai because it was cheap, and I always wanted to play with an RB. But practicality wise, I would say get the ROB. If I had to choose only one, I would get the ROB.
I agree with this, if I am a DIYer and had to choose one, my vote will go to ROB or DA. RB can achieve much more but it does take plenty of experience to master. Not quite practical if is just to be use on your ride unless your intention is to learn more about machine polishing. ROB and DA on the other hand can be use as frequent as you like to replace hand work. Ideally, should put effort more on performing safe wash, then learn to fill in and optimise paintwork protection.
I realise discouraging the removal of clearcoat is not always only because of strikethrough, in fact I am suspecting wax and sealant could not protect as usual on much thinner clear for whatever reason. This is some observation made when I regularly maintain different cars. There are articles that stress on this theory but when you experience it first hand, it will emphasis more on the importance of keeping your clearcoat integrity. Just my opinion though. However, if you are anal abt a perfect finish and have already prepared for that kind of detailing commitment, then get a RB..