We grow Marquette and I love it, but it is definitely low in tannin. We're still dialing in our Marquette recipe so I'm not sure I have a definitive answer for you yet, but my overall impression is to let it be itself. Don't try to make it into something it isn't. The first few years we made Marquette with no oak at all. It actually sold very well, but I'm starting to think that was a little extreme. I'm currently thinking that limited barrel time is the key. Like maybe a month or two, tops, depending on the age and condition of your barrel. It is also very nice when blended with Petite Pearl, which grows under similar conditions but has a lot more tannin.