Hi just asking for anyone who has had experience with a SD model. I'm looking at a 100cc Extra 260, it looks ok just wondering quality wise are they any good. All input will be appreciated

Yeah SD mpdels are pretty decent, they are/is/was/were SD, TOC, TOC Extreme, Aviation Models, Thunder Tiger... and maybe some other company names I may have missed. But it's all good, They are built solid.. The company has switched owners/names a few times as mentioned above. Some can be on the heavy side unless outfitted with all carbon gear, But It's good stuff, straight and well built. I have had a few myself. 30% Yak, 35% Yak... Liked em well.

I had the 30% SD yak. Not a bad plane at all. Could have used better landing gear but it flew well, was built solid but not heavy, and it hucked as good as most.

Had a 40 % extra loved it
I have a 35% yak and love it good planes