On the other hand, if you were determined to replace ALL the parts Harley installs that are substandard junk, you would be a very busy (and poor) person. I was trying to remember the last time I bought a car and had to immediately replace a bunch of substandard parts, and after thinking all the way back to 1969 I couldn't remember a single one. And not a single one of the new cars I bought from 1972 to present ever had a major failure of any kind. Hmmmmmmmmmm?
Assuming a couple hundred more bucks won't break the bank, a better set of lifters might not be a bad idea while you're in there. But be careful what you consider to be a better set of lifters. There is a lot of hype out there, and lots of other brands besides Harley have also had failures. Screamin' Eagle, Jim's, Fueling, etc. have all had plenty of bad press, so it's not just the stock Harley crap.
Jerry