Hello Teri,
Is there any reason you would like to switch? if it has been working well for you then you might as well stick with Kaspersky. Alternatively some good Anti Virus products that are reasonably priced are Eset NOD 32 and Bit Defender. Both of which offer single and multiple user licenses along with a 30 day free trial.
Let us know if you have any other questions that might help you in your decision making.