I've got the toneprint Ian and have tried the Hardwire, they are both really good pedals and both have very basic loopers. I wouldn't hesitate to recommend either.
With regards to the looping time I used to run out with my headrush which had 23 seconds. If you wan to solo over a verse then chorus progression for example you soon run out of time so bear that in mind.
I'm not used to not having an erase function on the looper either which is frustrating, not sure whether the hardwire does? I think I'll have to buy a dedicated looper when funds permit but in the meantime the toneprint is easy to use and handy for basic stuff.
The TP eats batteries, definitely needs a PSU.
the delays on both sound very good....