I haven't done any ZRL, yet anyway, mostly training plan rides, following bots to maintain a w/kg, random free rides, etc. My wife got me my TacX Flux 2 S for my 40th in 2021 and while I still prefer being on the road or the trail, it is convenient to be able to jump on the trainer for an hour or two and be able to hop off if one of our boys wakes up. I only got back on a few weeks back, we have struggled with our youngest who is nearly 17 months old but is sleep is a lot more stable these days. A good friend who emigrated to New Zealand a few years back got big in to ZRL, represented SA, won the top league with his team, etc. so you can go mad with it. Enjoy!