More awesome!!! Have to love the lack of reading comprehension.
The OP specifically asked (on an open public forum) for good and bad points of 'Ti' cassettes. The OP makes a destinction between 'shimano' and 'Ti' cassettes, making it overly obvious that he does not even understand cassette materials and construction. He then questions the (correct) statement about durability (again, a lack of understanding of simple material properties that he could easily verify with a google search).
Multiple clarification questions were asked by several people trying to help, none were answered....no clarification of expectations, or decision parameters provided..only that the OP wanted a 'Ti' rather than 'shimano' cassette.
It was pointed out that Shimano does indeed make 'Ti' cassettes, and thus contrasting 'Ti' with 'shimano' makes no sense what so ever. It was also pointed out by several people that if indeed one was for some reason needing to have a 'Ti' cassette, the proper method for doing so is to use Ti only on the larger cogs with more load spread.
Post three in fact does NOT answer the original question posted. Instead, it points out that the exact same 'Ti' cassette is sold by several vendors, and that 'Nino's' was more $$ for the same part. It answers the question of where to buy a 'Ti' cassete, a question that was never asked.
I could care less how much money people want to spend on bike parts (more the merrier), but it is VERY well understood that in every market, the top end 'botique' products offer the absolute worst bang for the buck (look up 'theory of diminishing returns').
BUT, if you dont want to hear others opinions, dont ASK for it.
The OP clearly does not understand what he is buying or why. He asked for (basic) input, and recieved several ballanced and correct thoughts about titanium cassettes and their shortcommings (as well as clarification questions that he never answered)...yet ignored it all.
Why post (asking for advice) at all if you are just going to just ignore all advice given?