First, do not buy any headset without trying it on. Ignore those who say My Brand is the best! Heads come in different shapes and to get a headset that is comfortable for you, you must try it/them on. If possible, borrow a different one for each flight you take before you decide.
Second, if you are at all serious about this flying thing, pay up to get ANR headsets. "Active Noise Reduction" (ANR) comes with different names (ENC is another that you will see) but they all reduce noise by creating "anti-noise" which has the same wave form (but inverted) as the noise you would otherwise hear, thus cancelling it out. ANR headsets cancel the noise in the lower frequencies (engine rumble, exhaust noise, etc.) but permit higher frequencies to come through so that hearing radios, speech over the intercom, etc. is not affected.
Remember, loud noise damages your hearing, and the effect of noise is cumulative over the years. In most cases the hearing loss doesn't really manifest itself until later in life. Act now to protect your hearing. This is the reason that the diminishing number of WWII aviators are almost universally hard of hearing.