I've got the Victron Orion-Tr Smart handling my shepherd's hut setup for just over two years now, so I can speak to the durability side which often gets overlooked in these comparisons.
The DCC50S is genuinely solid kit and considerably cheaper, but where I noticed the real difference was voltage stability during generator handover. The Victron's algorithm is noticeably smoother — less ripple, cleaner transition. With my ageing Honda inverter running the hut, that matters. The DCC50S felt more binary in comparison.
Cable runs are critical though. My Victron sits maybe three metres from the battery bank, kept well under the 10m limit. If your van or cabin layout forces longer runs, voltage drop becomes a genuine issue regardless of which unit you pick.
One thing worth considering: the Victron integrates beautifully with Victron's monitoring stack if you're already committed to their ecosystem. Battery management becomes far simpler. The Renogy is more standalone — which some prefer, but I found myself wishing for better integration when troubleshooting charging curves.
Real cost isn't just the