Can someone please suggest a Bitcoin Vanity Address Generator which can generate at least six characters (ideally case sensitive). It would be even better if the generator could create seven or more characters. I don't mind paying a little but I would prefer the service to be free.
I am looking to create a Vanity Address like
1Bitcoin... but my system isn't powerful enough. I probably need one or more GPU cards.
There is a post on this topic from several years ago; I'd like something more contemporary if possible.