Humidifier Suggestions? (Very Low Humidity)

Getting ready to drop beans for the next grow and my RH is sub 30%. Wanted to get a small humidifier for my 3x3 tent, but the models I’ve wanted are listed as emitting either cold or warm vapor. My initial assumption is to go warm as I don’t have any desire to drop my temp, but does anyone have experience with one, the other, or both? I don’t have to run an exhaust much during veg as temp stays in a good range so that’s not a factor.