My current grow is the first time I've ever gone from germination to final container. I popped the seeds in rapid rooters, then put them straight into 5 gal fabric containers with coco coir. They were definitely slower the first few weeks than all my previous grows. In the past, I went from solo cup, to 1 gal, to 5 gal. I've read they grow faster in smaller containers and it seems to be the case for me. But, after a few weeks, not much difference and of course less risk of screwing up during transplant! Next time? I'm not sure, but I may just go straight to final container again. It works, it's just a little different when they are young. Need to be careful not to over water when yo have a seedling in giant pots.