I want a new wideband and i need opinions.

In your opinion: With nice price and great for tune...
- AEM UEGO.
- Innovate.
- PLX.
- NGK

others...

I am sure this has been discussed before, but I recently (last week) went through my own expedition. I had a DIY WB from 14point7.com, and it was cheap, but ultimately, more of a headache than I ever imagined. Thankfully it broke, and I had to move on.

None of these units log rpm, which is very important in my mind. If you are tuning or making adjustments, you may not see small lean conditions on the gauge when you have to watch the road too. It's great to have both, the gauge to stop catastrophic failure, and the logging with rpm to find trouble spots and tune.

I ended up with an lc-1 from innovate. It lets you stream data along with everything else if you have a calum realtime. The data cable may work too since you use their logging software. You might also want to find a good unit with rpm logging besides those you listed.

I have an AEM Uego and haven't had any issues for 2 year. That gets my vote.

I am using the PLX as I had experience with it in a 300zx tt. Worked there so good enough for the b13

You should read this before making your final decision:

http://www.motoiq.com/MagazineArticles/tabid/59/articleType/ArticleView/articleId/1406/The-Ultimate-Wideband-AirFuel-Ratio-Meter-Test-Part-2.aspx

Enjoy!