I have been using reptiglo 8.0's for well over a year and have found they work great for all my zoo! When I used my friends UVB meter a few months back and measured my 6month old 5.0 and 6month old 8.0's I found that my 5.0's were well below the "advertized" output while my 8.0's were still well above the 5.0's optimum output. I am getting ready to re-measure my 8.0's which are now about a year old to see where they sit (I have newer bulbs in with the older ones just in case of degradation).
I will post the results here once I get some measurements.
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Raf
1.2 Jacksons Adults (Frank, Patty 2, Lucille)
0.0.17 Jacksons babies
1.1 Nosy Be's (Mars and Roja)
1.1 Bearded Dragons (Diego and Consuelo)
1.1 Adult Sulcattas (POOPIE and George)
0.0.2 Baby Sulcattas (frick and frack)
1.0 Home's Hingeback Tortoise (SPEEDY)
0.0.2 Red ear slider babies (Hingis, Dingis)
1.0 Yellow Footed Tortoise (Alfred)
1.1 3 toed turtles
1.0 Red Siberian Husky (Harley)
0.1 Black Lab (Krissy)
0.1 English Bulldog (Alice)
0.1 Blue Merle Great Dane (Wednesday)
Saltwater Fish and Inverts too