Spray Foam in Rim Joists

Alright so I have given in and am having a company come spray foam my 500 sq ft basement finish. I have a couple different quotes and my question is about the rim joists (I am in climate zone 4). One company is suggesting closed cell foam followed by fiberglass to reach the needed R-19 value. The other company is swearing by open cell foam at 5-6" which will obtain R-19.05 at 5" (no fiberglass needed). Closed cell product- Demilec Heatlok SOY-200 Open cell- Demilec Sealection 500 Any clear choice to anyone who has experience with spray foam? Also, I thought spray foam needed an "approved thermal barrier" to cover it, but they would be spraying the joists in the storage/unfinished area as well. thanks.