AIO advice

[andyme]

Looking to go AIO I have a noctua nh15d i know its great but it does not look great looking to spend around 80-100

[Semper]

My first thought goes to the Castle 240EX
It's a little above your price range, but in it's price bracket, it's one of the better reviewed AIO units currently on the market. Your budget is a bit tight for something that will perform at or better than your NH-D15
https://www.amazon.com/240EX-Addressable-Technology-Controller-Motherboard/dp/B07S1SQDDJ

 

That said, you do have to consider what your chassis will support, as you don't have it listed, I can't comment on this.

[NotABigGamer]

I would recommend corsair as they are very reputable in the aio market or NZXT. I have this aio in my system for almost a year now and have had no issues and its only 90 usd. You would have to check if it would fit in your case though. https://www.amazon.com/240-V2-Technology-Waterblock-Controller/dp/B07QPNP4VP/ref=sr_1_7?keywords=aio&qid=1584583936&s=electronics&sr=1-7  

I dont think it would be better than your air cooler though.