I'm still keeping my eyes open for an article I read about a year ago that went into why longer esters may cause different effects in some very specific terms. If anyone knows of a site with bodybuilding related scientific articles (I remember a black background and red or green links) please link me.
Another thing I've been thinking about that has no scientific basis is that since esters are stored in fat, they might activate otherwise dormant fat cells, which happens to be one place that aromatase is produced.
RB