@Cbourbeau32 , I'm an old Noob with air guns but have some serious experience with powder burners. Due to a move, shooting powder burners is nigh impossible for me now. I too really am more interested in .177. Recently I thought the Reximex RP was going to be an alternative, but have since decided I can't take a chance on an "unproven" .177 carbine/pistol and canceled my order of one.
One of my old powder burners buddies who has some air guns, including an FX mKIII, had a Notos delivered to me, after gifting me a mint FX Streamline .22. I sure wish it was .177 but heck, you can't argue with success. The Notos has to be the Ruger 10/22 of air guns. I sort of love the Notos.
I don't think there is a Notos equivalent in .177 right now. I have a .177 Stormrider, it is too long and requires too much fiddling around unless you just like it as a 17FPE .177 that has a bit of a bark at OEM pressures. To make the Stormrider a better gun you need to get an Altaros regulator and mess around with the hammer spring which requires some fiddling which I have done. The Stormrider is nice because it is very light weight, and for me is very accurate. I had a Beeman Chief too, gave that away but it is fine for what it is.
The coolest .177 I have ever seen that is handy and accurate is the AA S200 I acquired that someone put in an aftermarket trigger and is tuned to 12FPE. It is a "quiet" Lazer with 10.34 JSBs. Unfortunately not all S200s work as well as mine because I purchased a near new T200 that had an awful trigger & bolt action compared to my old S200. I gave the T200 away to a fella who likes to fiddle even more than me. Good riddance I said.
I have been looking for a "great" .177 that is Notos-like at its price point, I am pretty sure it does not exist.
Get a .22 Notos. There is a rumor that a .177 kit might be forthcoming but do not hold your breath. Just get a Notos, a GX CS4 compressor and a million rounds of JSB Exact Jumbo Heavy 18.13 domes.
V/R,
Old Noob "graycrait"