Having just replaced 8 blocks and only 3 of my running rigging lines on my Newport 33, only 9 more blocks and 7 lines to go, I can only say, What Kind of Sailing do you want to do? And how big is your budget? On what I've replaced to date I've spent a Grand easy. But have replaced some tin and plastic junk with Guarhuer Cruising Gear, and the cheap line with the Good Stuff, not top of the line mind you, but a cut above the factory OE for my boat. I now have old lines running over smooth new blocks and the difference is palpable, and where I have the new lines running over new blocks? Wink Wink Nudge Nudge "Say No More! It is like New. I'm a Day Sailor / Gunkholing Cruiser, with no desire to Race as I do enough of that when I'm on the clock. So ask yourself, what's important to You? what is your budget? And how do you sail? Cheers!