I have had time to reflect on this device and I stick by my original five star rating. This is one top quality MP3 player that excels at what it is meant to.
I have read the review that you can't use this whilst jogging and that is a fair comment. However, this is common to ALL hard disk devices ie. devices with hard drives. They have moving parts which can easily be jogged and as of yet none are able to offer shock protection. iPods, Creative Zen devices, Sonys and others alike with a memory of over 1GB all exprience this problem. If you want something to do sport with, you need to look at the Creative MuVo or iPod Shuffle, but you will sacrifice memory amongst a range of other functions. The Sleek is fine in the gym on the running machines and the like. Just slip it in the cup holders. For me this does not compromise the device enough for me to lower the star rating.
It still has a long battery life, excellent sound quality, intuitive interface, handy software, superb extra features, an excellent look and 'Sleek' build quality and appearance.
You will hear reports of faults, but these should be taken with a pinch of salt. A proportion of all products in all fields have defects. In addition, we are more motivated to evaluate a device when we are disatisfied. A friend with a problem with her Zen Micro recieved exemplary customer service from both Creative and Amazon and she now has a replacement device which operates perfectly.
In conclusion, even when the honeymoon period is over, the Zen Sleek stands out from the competitors and remains a 5 star device.