I'm interested in people photography and have been using 400TX in medium format. However, I prefer less grain that what Tri-X offers in 35mm format. For an 8x12 enlargement using very sharp glass (100mm apo-macro Elmarit), which emulsion - Plus-X or XP2 - would likely yield a sharper image? I suspect that XP2 would win in the tight grain department, although the grain of Plus-X can be appealing as is its overall tonality for portrait photography. Thanks.