I currently have Redarc equipment in my ute and use it everyday. I have used a smaller Redarc BMS in my tent trailer previously and found it to be of really good quality, I expect the Manager 30 just purchased to be the same in the Caravan. Pity they are as pricey as they are though.
REDARC products are great quality and a great South Australian Company. I have used the S1 for many years without it letting me down and I am excited to use the S2 for my new Overlander build