I have both the "under fork bottom" type (Harris) and "under head-stock" (Motogp) type. If you're going for your first front stand then I'd go for the under head-stock type as they allow more access to the wheel as well as allowing the forks to be completely removed. The Motogp (google it) one I have is not the cheapest but it is good quality. It also hinges (like the Harris one in Deacs picture) which makes using and storing it easy.
The only thing to bear in mind though is that the Mille (Showa anyway) head-stock "hole" is 27mm. Typically the head-stock stands come with a selection of pins/spigots, but only 13mm to 18mm. So, you will have to make sure the brand you buy also sells seperate pins - unless the right size comes supplied!
Regarding the "under fork bottom". The Harris one I have is nice quality, works well and looks the part. But, it is expensive compared with other brands and I doubt any better....but looks the part in the pit garage!
Dan.