Patrick Chase
The only modern maker that I know of that did a heavier, higher-precision version of the Stanley sheet-metal cap iron is Veritas, in their "classic"/non-custom BD planes:

http://www.leevalley.com/us/wood/Page.aspx?p=46294&cat=1,41182,41187,46294
http://www.leevalley.com/us/wood/page.aspx?p=44751&cat=1,41182,41187&ap=1
http://www.leevalley.com/us/wood/page.aspx?p=47298&cat=1,41182
http://www.leevalley.com/us/wood/page.aspx?p=45156&cat=1,41182

In my experience they're a snap to tune up for close-set use. Unfortunately LV decided to "follow the market" with their subsequent custom plane platform.