Hi Guys,

I will be startng my subfloor this week and wanted you help choosing the way to do it on concrete for my basement.

1. OVRX/Dricore 2x2 tiles. The most expensive way, but only 1 1/8" thick. My concern is that since its not nailed down, I should install another 3/8 plywood to cross. Manufacturer says its not needed, but I am wondering if I should to make it more solid and level.

2. 1x3 (forence) base, nailed/screwed to concrete over asphalte paper, and hardwood nailed directly on it or over 5/8" plywood. Is it safe to nail directly on 1x3 or need plywood before? This is the cheapest way and loses the least headroom

3. Floating subfloor on 1" DOW XEPS blue insulation sheets, then two layers of 3/8 plywood crossed. This will be the warmest floor, and cost is between the other two, but also loses most headroom.

Please let me know which you guys recommend the most and if anything here you would not touch. these are just techniques I saw while doing net searches.

Thanks!