If you want good reliable cheaper stuff, try the Chauvet Q-SpotLED range as I've found them pretty good for the money.
For what it's worth, you can buy a Chinese knock off (not OEM, I checked) of the Qspot260/Showtec Indigo 4500 for about £200 + shipping + taxes.
Apart from the very thin ally in the cans, I can also vouch for the Stairville Pars. I've got some of the 24x1W Par56 and the range of options on them is very good, ideal for static colours (dimming of each channel via dip switch, so lots of shades and brightnesses available) plus really good master slave, 3 DMX personalities, and dirt cheap.
You are using Bonetti's defense against me, ah?
I thought it fitting, considering the rocky terrain.