What wide band gauge/sensor

I am looking to buy a Innovate gauge for my car so i can properly tune my LS. I was looking at the DLG-1 P/N 3891 dual lambda/AFR gauge.

Do I need it to be dual to look at both banks? and with the HP tuner software be able to log/tune both?

In all honesty a dual lambda input is probably overkill unless you're tuning something that is going to be running on the edge. There is the ability in HP Tuners to perform a relatively basic cylinder trim however it's not very refined. I use a single sensor mounted after the merge in our exhaust so it's measuring the average AFR for all 8 cylinders.

Thanks Andre! I really appreciate it.