resist the dark side, page-142

Does anyone else say the bobs are the go to buy for an investor rather than a trader, given that:
1. they are lagging the heads, and have done so quite consistently over the past couple of weeks
2. they are less volatile than the heads
3. at half cent intervals, the percentage which each half cent increases by is greater than that of the heads? Of course, if the price falls then the percentage fall is larger as well, but then if one is holding long term, does it matter?