I'm pretty close to agreeing with PJ here on pike flavor.  I wouldn't call it nearly identical to walleye but it is a close second in my book.  My strong preference to stringer up walleye over pike is more due to the bones than flavor.  

The bones are not a huge nuisance...if you know how to attack the fillet with your fork you can strip 'em 100% out very easily...but hey, I'm lazy and walleye ARE easier to eat and to fillet.