You are on the right track, the stuff at HD and lowes is pretty worthless, if you are looking for a consistent brite lite or accent lighting on a home. Look towards a local landscape supply, you can also search for a Unique or Kichler dealer near you. I used to own a landscape firm and would recommend both products.
Personally, I'm not into the spotlight look. To me, it's a bit unnatural. Sunlight comes down, so shadows from spotlights are going the wrong way...picture that Halloween trick with the flashlight under your chin. The lintels and sills should cast shadows down, not up. To me, a more pleasing visual effect is to put down-pointing floods in the soffits. How about just a porch light?
How about just using some inside lights on timers? The windows will be lit making the house look occupied. You won't be wasting electricity by lighting the outside of the house when you're not there.
lightit, how do the mr16's stack up against the par38. i want a good beam but dont want to have to wear my sunglasses at night. can you power a par38 on a low voltage system or do you need the direct line for that size bulb? thanks.