I honestly cant rate one above the other the Provari is regulated just a smidige better than the semy but the semy has the 3.1 hybrid adapter. also the diffrent tops to match your atty. The Semy is tough. I dont think the Russians have ever been accused of manufacturing things cheaply. Russian AKs and SKSes get 3 time the price as a Chinese made and double the UGOs and Romanian.
And of course the Semy has VW as well as VV
And of course the Semy has VW as well as VV