i just ask to post good mod that use OBSE, even if i will not like it... maybe i will find something i like. All i want, is some mod that worth installing a new program...
It's not a program. It's a mod, like - but also, yes, rather unlike - most others. It doesn't run independently of Oblivion, or even concurrently. It becomes a part of the Oblivion program. Provided you use [typically a shortcut to] obse_loader.exe instead of the launcher or any other executable, that is. But anyway, you don't have to "install" anything. Dump it in your Oblivion directory, possibly make a shortcut to obse_loader.exe (a good idea, I think) - and done! That simple.
What it comes to down to, IMO, is that - chances are - there will come a time, even if you choose not to use it now, that you've just downloaded some fantastic-sounding mod, you read the readme (or indeed, perhaps the description at the download page), and discover...
Yep, it needs OBSE.
Really is - probably - a matter of when, not if.