Abynum,
If you're willing to be very patient in your tank, PM me around October/November 04, and I will give you pictures & an update on my current TBS rock tank (which will have approx. 1 year by then). My previous experience with Fiji LR was positive until about 3 years, when I had a power failure.
I too had similar misgivings as you did, but I did not need pictures. I found some web (non RC/RDO) logs & BBS postings from customers who had had TBS rock for over a year, and were still happy. You will have problems finding experiences > 1 year because of the community 'age.' RC has grown tremendously, so the average 'age' at RC is probably less than 1 year (moderator, help please?).
I do not expect all the life on my TBS rock to last forever. I don't know the life expectancy of the oysters, clams, etc. I'm pretty sure that my bristleworms can reproduce in my tank, along with pods. I don't know which of the other microcritters will. I know that the corals, sponges, tunicates, etc. won't. At some point, even the best kept tank needs replenishment with additional substrate, rocks, or critters--because our tanks are not a perfect replica of the sea. We do water changes, we skim, we light, etc. to do the best we can, but when all is said and done, our 'closed' system is not a self-sustaining ecosystem.
As with any mail-order company, you don't see what you get until you get it. I have personally found TBS to be very accommodating of special requests, and their rock to be as varied in shape as premium Walt Smith Fiji. I'm sure some folks will have negative experience, but that's a general issue with most mail-order livestock.
The 'porosity' issue has to do with biological filtration capacity. The greater the surface area, the more colonization space for your nitrifying/denitrifying bacteria. I keep my tank relatively lightly stocked for its size, so I use less rock than recommended.
Regards,
Hy