Arcalion

I had used ESET NOD32 for a long time - 16 years to be precise -- and am very happy with it. I am debating upgrading to ESET Internet Security. My question is: Is there any drawback to upgrading I should know about? For example if I decide I don't need or want some of the added features, how hard is it to disable them? Or to put it another way, other than an extra $10 a year am I risking any unwanted hassle by upgrading.