I'm amazed that oppies aren't more popular at these...

I'm amazed that oppies aren't more popular at these levels. You highlighted the upside potential very well but even on the downside it has benefits. Say you buy 1m for $8k today vs 1m heads for $38k. If initial results go badly and by end of September price is 2.5c your oppies would be worthless but if you still believe in your investment you could buy 1m at that time for $25k. So you'd still have 1m shares but they only cost $33k vs $38k today.

If it goes other way you'll make a lot more as you've demonstrated. To me it's a win-win if they trade as same level as heads.

Disclosure: I own a lot of oppies and no heads.