I love the tractability of a flat torque curve. One of the reasons I sacked off the big bhp setup from last year was for this very reason - a tiny (un)usable power band thanks to a really spiky torque curve.
Even now, my curve is nowhere near as good as josh's but vastly improved from last year, making 250ft/lb from 4500 to 7000+ rpm, without changing more than 10ft/lb over that range. SO much more drivable.
Watching Josh's car at the weekend was just like that - smooth, long, effortless power. It's really dialled in well, and although needs more power (

) really is something to see. I'm super impressed with how it goes!