Being in need of some (actually a lot of) compost, unable to get the the store (broken knee) and therefore having to order online, I decided to go with Fertile Fibre Coir-based compost. They do plain coir but also stuff that is blended for seeds or for potting-on. It seemed to come with good reviews. Normally I get New Horizon organic peat free, but couldn't find anyone to deliver it this year.
However I can't say I've been that impressed. Some plants have liked it, but others I've struggled to germinate, including ones that usually grow like weeds. Some of the plants look like they need feeding after a very short time considering it is supposed to be ready to go compost. The spuds absolutely love it, but the tomatoes (a very closely related plant) really don't like it, and I've been forced to start feeding much earlier. Courgettes love it, beans love it, most of my flowering plants really don't like it at all apart from Achilleas.
So, probably won't be getting it again. Anybody else used coir-based compost?