You may be surprised at how well some of those work. Board member Slamfire said the Tula primers are his secret weapon in .30-06, getting some sub-ten fps SDs; lower than Federal Match gives him. (Note these KVB-7.62 primers are not the KVB primers that did poorly in the Michael and Amy Courtney experiment; those were non-toxic primers with DDNT instead of lead styphnate in the priming mix. I am hoping they will repeat that work when the Federal Catalyst primers become available to test.)
In the meanwhile, the only issue I found with the KVB's is the cups are crudely ground to length on something resembling a belt sander (from the marks on the cup lips). This leaves burrs and causes them to require some effort to seat. You'll want to swage or ream your primer pockets, as you can crush one on a tight pocket like the ones in IMI brass.