Thanks for the reply Twister.
The lag and input issue I have wasn't the glass itself on the Spigen. It had more to deal with the type of adhesive used which could cause interference. Which is probably why Spigen never released a Note 2 version of the Glas.t. But the issue on the Note was minor.
It looks like Seido overcame most of the issues plagued with previous tempered glass protectors from other manufacturers. Good to know.