If i buy a samsung blackjack ii, should i also buy a memory card?

it comes with 155mb which sometimes is not sufficient, especially if you take hi-res pictures and videos. I would suggest getting a 2gb memory card. Do not go for a cheap one. I had a cheap one for 3 months and couldnt figure our why a song would skip and why it took forever to scroll thru the pictures I had taken. I upgraded to a Kingston memory card and that problem was solved.