If you are serious enough about
online poker to consider using a HUD, it is much better to play on a PC or laptop anyway. The screen is larger, which allow you to have more tables open. A laptop is perfectly fine for 4 tables, which coincidentally is the new cap on
pokerstars for regular cash tables. If you want to play tournaments or SnGs and go above 4 tables, consider a stationary PC preferable with two screen setup.