I've used the Reveal bulbs, all they do is give a whiter light, as opposed to the orange/yellowish light. The choice is really yours. However, I quit using them because I needed a higher wattage and went with a Exo Terra tight beam basking light.
For custom built enclosures, as mentioned, many use industrial strength (holds like 2-3lbs) velcro tape to mount it.
Israel is currently in a 40 gal. breeder, we're looking to pick up a a very large, old antique china cabinet soon and convert it into a huge home for him. For now, in his 40 gal., I mounted his
UVB light by wiring it to the lid:
Israel by
Dog Gone Awesome, on Flickr