Hi Ryan,
In fact, you can have the best of both worlds: ease and comfort of preparing your tests locally in Hot Potatoes and the advantages of using Quiz for testing. You can import most Hot Potatoes exercises easily into Quiz with just a few clicks.
If you present your Hot Potatoes exercises through the Hot Pot Module (Moodle 1.9 & 2) or through QuizPort the grades will be recorded in the Moodle gradebook. However, I find Quiz is better for a real test.
Here's a tutorial on How to make a multiple-choice exercise function like a traditional test
Cheers,
Glenys