Or, For four bucks more, you can get a 250 count bag of Good quality balloons......
La Rock's Balloons
Just a good rule of thumb: stick with either Qualatex or Bettallatex balloons. The ones you want are called 260's. The color assortment doesn't matter. I'm real crazy about the colors in the Entertainer assortment, The traditional assortment are also excellent. But to learn this is a good way to go.
I have a bag of the balloons you are looking at and they are very difficult to blow up and twist.
Also, while your at the Larocks site, pick up a balloon pump. The hand held purple one made by Qualatex will serve you well for a long time.