Corgis need to be groomed a lot. They are double-coated dogs and will hold their dead coats which end up making them uncomfortable and making you vacuum twice as much! So, if you aren't capable of doing regular grooming on your dogs, please do find a groomer to hire.
Also... PLEASE do not use a Furminator!
If you live in the Everett area of WA... please take your Corgi to Eth Henry (look him up on Facebook). He's the one that grooms my show dogs, and a lot of my client dogs!