One thing for sure, getting a chronograph definitely pointed out to me the inaccuracies of judging velocity by the fired primer appearance....
Got an Oehler 35 in the late 90's after using a couple of less than reliable other ones. The plastic housing is getting kind of beat up and I keep thinking that after 20+ years it's time to upgrade, but it keeps on ticking and never lets me down. Plus I wouldn't know what to upgrade to. Nice to read MD is still using his and considers it to still be among the best for a hobbyist type handloader.
Like many here, I mostly use mine these days to keep out of trouble - and it has paid for itself several times over by pointing out potentially big trouble approaching more than once.