[stoli]

At the casino I play at almost everyone buys into the 3-6 game with a rack of white (100 in singles). But sometimes I'll take double that or 150. I wouldn't worry about appearances that much, let your playing do the talking. But some people perceive when someone sits down with 200 or more that they are buying in with that amount in anticipation of losing and not wanting to get up to rebuy. Some people will interpret as you trying to intimidate them, but most or almost all won't notice how much you bought in for.