Sherwood Pines isn’t as good as Cannock in my opinion and again, is best ridden with local knowledge.
I wouldn’t rule Cannock out, providing you can meet up with someone who can put together a decent loop, taking in some secret singletrack. Alternatively, wait until Phase 2 of FTD is open and you should have enough waymarked trail to make the trip worthwhile to ride on your own.
Try Nant Yr Arian for sure, if you’ve not been before. It’s superb.