I own the Loop Quiet2, Loop Engage2, Loop Dream, and Loop Switch2. For this deal, the Quiet series is enough for most loud areas where you need ear protection and the Engage is a great way to protect your ears and maintain awareness in loud environments. Occlusion / Underwater feeling occurs in all earplugs. However the louder the environment the less this will be noticeable. The Switch2 and the Dream are my favorite. However in this case the Engage is quite effective for loud areas where you still need to have some awareness and want to protect your ears. Earphones with ANC does fall short in longterm use which is why I use the Loops. Some of my work is in a datacenter and have to spend hours in there at a time. For this I couldn’t use my AirPod Pro 2 or AirPod 4 ANC. The whining of the servers does affect the ANC and it has trouble keeping ANC on it gets nauseating. For this purpose I use my Switch2 if I am working with a colleague. The sound is mostly muffled out but I can carry a conversation. It’s hard to have a conversation there anyway. The Quiet2 is my second choice for this work. The Engage if worn at a loud coffee shop or bar, is a bit more muffled than the Switch2 at middle settings. The Switch2 is most versatile in this setting. The Dream (not listed in this deal) is very very good for sleep. I live near some open roads where lots of burnouts and donuts happen and this helps with my sleep.