Thanks for responding Macsic!
Yes, the 2441 i read is very good.
Alu diaphragm, beside beryllium I have not tested.
Beryllium is to expensive.
Alu, maybe some day I buy and try.
But I think the original ribbed TI sound quite good as long as use tweeter from 6-7k.
Over 7k the TI diaphragm sound really bad with a lot of resonances.
I have the 2405, and it`s really good!!
2404 is just a tiny bit better with the 2360, but it`s not by much!
I will not test the Altec 288 as it needs adapter.
Adapter makes the already long throat of 2360 even longer...not good.
But, yes, I read and people tell the 288 is really good driver!!
And it can be bought new from GPA!