I bought this, looking for a smaller hammer-action, weighted keyboard than the M-Audio 88-key it replaced which was quite good but bulky and light on features. I've lost an octave - but for producer use, this isn't noticed at all. And unexpectedly, the key action is better. Along with a smaller footprint, the controls are basic but functional - and build quality is good. Plus it has its own sound output which is great if you want to use with a DJ set-up / live gig.
Highly recommended.