I use the Stanley 59 version, it only has provision for drilling a single dowel hole at a time and for my woodwork it works great, and because it only comes with Imperial bushes I had to learn to grind my own lip and spur drill bits, and make my own dowels to suit, but I think these guys are talking about a whole different ball game with their expected levels of accuracy!
Steve.
I have a Stanley 59 as well. it's good for getting a dowel into a tight space or splicing in a new section of broken chair or table leg. I can get everything to line up if the joint is so badly broken it won't glue back as is. Mine came with a full set of bushes (eight in all I think?) and most will accept a metric drill bit that's close enough in size. It's a nice little tool.
I also have two sets of Record 148 doweling jigs but find them so fiddly I usually resort to the Wodens. They're great for end or edge dowels.
They need a piece of sacrificial 2x1 for doweling into a face side. But this acts as a story stick after the first set of holes have been drilled.
They make joining mitres easy as well. Perfect alignment every time.