I believe a Tange Prestige tube set (main tubes) has the same wall thickness as a Reynolds 853 tube set - .7 / .4 / .7 - and both were/are available with short butted sections - so the frame weights should be similar
Tange Prestige Super Lite is .6 / .3 / .6 - but this tubing was primarily developed for road frames
Interesting but most of the Tange frames built backin the days whether it was for Lapierre,Scott and some other brands were building their frames in Taiwan ,Specialized made their Tange frames in Japan and they weren't handmade in the US like Fat Chances or Ritchey, Voodo, Jamis, Kona, Breezer, Independant Fabrication and other handmade frames. If I check the
Tange Prestige OS ,it is a 09-0.6-09 tubing nothing comparable to the 853 much more comparable to the reynolds 520 not even on par with the 631. The only tubes that could be a matchfor the 853 would be the
Tange Prestige Japan which is indeed a 0.7-0.4-0.7 and even
Tange Ultimate which is 0.65-0.35-0.65 Tange was quite popular in the late 80's early 90's but their tubes aren't air hardened like the Reynolds 631 and also 853, no frame builder works with Tange. Most of high end steel MTB bikes since the mid90's use Reynolds,Dedacciai and Columbus tubes. As what concerns theTange Prestige Super Lite it must be a scarcity, I never seen one in my whole life. No bike manufacturer uses Tange tubesand this since the mid 90's,maybe it is a sign of something