Untrue, its the nicest stem that I've used on my 24UK by far! By the 24UK frame is a tad smaller than the Inspired, so that could be why this stem works for me, and not for others?
For a 'streety' 24" I'd go for a 26" stem, but for a 'trialsy' 24" I'd run one of the shorter 20" stems. Something around 150X30 would be good.
i'd say one of these stems:
150x25
Monty 221 Pr
or,
150x25, 150x30, 160x25
Viz Welded
Its all personal preference really, I prefur a longer 'reach' and a higher front end - so those two stems would be ideal for me, but not for others.