I'm trying out ONR for between-washes wheel cleaning. I'm also using it at QD-strength.
While I use BHBs for normal wheel cleaning during a normal wash, I'm leaning towards different media with the ONR.
When doing a normal/conventional wash, I try for a dislodge-and-flush approach, and brushes are great for that. My rinse bucket stays pretty clean as the dirt doesn't get transferred to it by the media (but is rather flushed away during the wash process).
Conversely, with ONR, the dirt seems to transfer to the wash media instead of being flushed away, and brushes don't seem to absorb as much dirt as other things do. People who use ONR often talk about how much dirt gets transferred to their wash/rinse buckets. They view this as a good indicator that the ONR is being used correctly.
MF mitts (very plush ones) or towels seem to work well, and I'm considering trying out a grout sponge too. Media like these seem to really get dirty (and to transfer the dirt to the rinse bucket), and to me that indicates that the ONR is doing its thing.
But hey, I'm far from an expert on ONR, I'm just feeling my way and going with what appears to work the best.