I'll second that one. If you can't afford it now. Get something cheap and used. Then, save the money for the 3pk later.
3pk rocks though. I've had the M8, XS3, and now the 3pk. Very comfortable. The KO Helios looks pretty sweet and feels very comfortable as well.
"There is a fine line between hobby and mental illness. Which side are you on?"
“Life is hard; it's harder if you're stupid.” - John Wayne