Compost differences

I sometimes think we get too 'hung up' on compost quality as basically its a bagged alternative to soil. I don't know about you but my seed bed outdoors hasn't been 'riddled' so that it is a uniform particle size. Seeds still germinate in it. To my mind it's the same with compost. I don't really care whether its uniform or has the odd bit of plastic or sticks and small stones in it. The organic content, whatever it may be, means that it has better water retention than basic soil and that's all that matters to me. 
As long as seeds have water, air and sometimes heat thats all they need to germinate.

Steps down off podium!