The MRD is insanely loud, even with the quiet insert. Look into getting some ear plugs for longer rides, I got these: https://www.amazon.com/gp/product/B07K2T3XRX/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
That said, I love the added power and it's quite the luxury knowing any and every car you ride by knows exactly where you are.
https://www.amazon.com/dp/B07K2T3XRX/ref=cm_sw_r_awdo_navT_g_7NTY1V3AYMST6JGFQH9N
These are nice too because they come with regular plugs too in case you want to sleep in the campground.
I use Sony noise cancelling headphones, they are pushing your budget at just over $250, but you can often find sales. I did have a couple of cheaper pairs before I spent the extra money, and the difference is astounding.
For me, they have been one of the best purchases I have ever made.
Earplugs, I use these : https://www.amazon.com/dp/B07K2T3XRX/ref=cm_sw_r_cp_awdb_t1_rjt2Db641PWEY
But lots of choices, and I haven't found that spending up for more expensive versions to be worth it.
Putting one in when in a restaurant with lots of ambient sound makes a world of difference.
My last advice is to just keep in mind social situations with noise or lots of cross talk will be both difficult and tiring for your husband. The amount of concentration is takes to listen when there is more than one thing going on has really surprised me, and it can be exhausting and overwhelming. I have some friends and family who have been very considerate in changing venues if a restaurant is extra noisy, and make an effort to seat me so my good ear is facing most of the table. Those things are very much appreciated.
Good luck to you both.
Mudeela
$16 on Amazon for one pair in the keychain.
For $24, you get two pair in the metal case (check the coupon box to take off $6) so you can offer protection to your friend when you go to the movies together.
Both prices are pre-sales-tax.
I can't recommend a small earplug enough. If you're in an open office/noisy place cutting down the background noise makes a huge difference and, generally, the earplugs don't make it so you can't hear conversation directed at you.
I use these, but there are so many choices. Best fo luck to you.
https://www.amazon.com/dp/B07K2T3XRX/ref=cm_sw_r_cp_awdb_t1_rjt2Db641PWEY