CW - every time if over 5 hours on the plane. Never/rarely sleep - but at least CW I have a chance to. Food likely better (and drink). lounges will make any extended layover easier to deal with.

If this turns out to be actual rather than hypothetical - and you opt for CW...go into WT+ / WT after the main meal (for a walk)...that should be the final confirmation of the right choice even if the meal / lounge / priority boarding / seat comfort hadn't done it for you by then. If the close proximity of pax to each other isn't realised - the likely long line for the WC should be evident.

Only way WT+ plays into this is if route runs fairly empty (time of year for example) - but even then it would have to be because I saved significant money rather than saved a layover in a CW lounge