Are 5 Letter (LLLLL) .com domains worth investing? (Hand Reg)

So the 4 letter domains are far gone, and most of the 5 letter ones are as well. Has anyone here had positive or negative experiences with hand registering 5L domains? This could make a thread helpful to many newbies like me. How much do they generally go for, are they mostly through inbound or outbound sales? What aspects should you look for before hand registering such domains? We'd really appreciate anyone who'd like to share their knowledge and experiences!