I raise a tad more only if there are more limpers just so I can cut it down to 1-2 people. I am tempted often to raise more with my bigger hands preflop, but people really pick up on this, I can tell from how they react preflop. Also, when I see this from other people I figure the bigger raises are bigger hands too. Like I saw this standard guy suddenly open for 6bb.. said to myself "obvious AA" and was right.