There are several very good suppressors for those hosts. But before we get to that, let's talk about your host weapons.
You will need a piston device on the pistol application. You know what the piston does, right? On the SBR, I assume you will be dealing with a fixed barrel platform. So, you could use either a thread-mount suppressor if it has a fixed barrel device or a 3-lug mount. The benefits of the three-lug mount include easier (and faster) installation and removal from the barrel plus no worrying about the suppressor working loose as can happen with a thread-mount solution. You must decide what type of mounting solution you want on this host before shopping for a suppressor.
When thinking of a 3-lug solution the one that comes to mind immediately is the SWR Trident. Their 3-lug is reliable. Some other 3-lug designs get very gummed up in short order and can be difficult to remove from the barrel. No so with the Trident 3-lug. The Trident LCD and fixed barrel spacer are also top notch.
The AAC TiRant does not have a 3-lug available but the fixed barrel spacer is great. The piston system works very well on the pistol.
The AAC Evo-9 has a 3-lug solution available, but in my personal experience is very sensitive to dirt and debris.
The SilencerCo Osprey is a wonderful performer on pistols and carbines. It does not have a 3-lug mount. Some people like the looks of a tubular design on a carbine.
There are other good suppressors out there in addition to these. But these are the ones that top my list.
Mark