I have had mine for about 7 years. Its very good and I highly recommend it. Looking at their "latest" guide, the only difference I see is the added length. Mine has all the other features they tout.
Mine is very accurate and durable, having survived several unscheduled and uncontrolled descents to the concrete floor in my garage without losing any accuracy. The diagonal arm supports long pieces very well also. I give mine 5 stars with no hesitation.
I'd like to 'test drive' one. Is there a place that has them on the shelf where a person can get hands on before purchase? It looks like a great tool, but I'm not sure I want to spend the money without a hands on look.
I don't know where you can test drive one but I will add my support. I have one and I thoroughly researched it before buying it. The other designs with very detailed scales on something like a regular miter gauge do not have the triangular support of the Osborne and their scales are much smaller, more difficult to read. I think the Osborne is the way to go.