But getting back to the original topic if I may?.
You don't need a great deal of wattage to create a half decent lighting effect in a garden.
As Bill said above and I would tend to agree 50W dichroics can light a large area if positioned correctly.
Copper coated fittings with the Verdigris effect on them are selling like hot-cakes here.
And you hardly even notice they are there until they are switched on at night.
I'm pricing out a job at the moment to do as a Foreigner, while I'm on holiday and it will be a challenge, but, I'll also come away with some great before and after pics if I have things worked out properly.
Also, I'll be using the new Philips Plus line of 40W Dichroic bulbs. [Linked Image]