I have been picking locks for a little less than a week now and I am hooked

. I have bought master locks #3 and #140 and can pick them both extremly eaisily in less than 10 sec. I am looking to buy another lock but I don't know what type i should try now. I do not have alot of money to drop on a lock so can someone please tell me what lock they feel I should move onto now, thanks.