I'm scoping the HG-20 with 12-28. Just ordered the wheelset and will start on the parts to get me rolling in the next few weeks.

The gearing is as follows: 12, 14, 16, 18, 21, 24, 28. This leaves a huge gap at the hillclimbs but I can deal with this no probs. Otherwise, it's classic half-step kind of stuff. Much better.

Thanx for the input, friends!