I was surprised to find that the heating option actually felt really good! The vibration could stand to be a little stronger, but it would still do the job, except that the "rabbit ears" were flat on the inner sides which made them sort of sharp and pokey rather than comfortable and fun :(
I trimmed off the ears and I'm going to try again, I bet it'll get the job done with this minor modification ;)
EDITED TO ADD: I trimmed off the "ears" and I was right, with a little adjustment, it's a great little stress reliever! Upped my stars from 3 to 4. Stronger vibes would make this 5/5 but it still gets the job done!