Ive tried Biona Oil and also Nutiva (http://www.vit-shop.co.uk/store/p/5209/1/Nutiva-Coconut-Oil-426g.html).
Nutiva won hands down.
Biona barely even smells of coconut.
Nutiva has a strong coconut odour (if thats what you like).
I tried MCT powder. A small 5g scoop of MCT powder makes my stomach burn, so I've completely ditched MCT powder. Coconut oil - I like.