I'd take Reaves over Russell for sure. The only real risk with him is he doesn't have a huge sample of being great yet; so you're gambling that this continues with a big contract.
The FTr doesn't seem sustainable, but there's no doubt he does have a good skill for drawing contact. He just shouldn't be getting calls like LeBron lol. But he's an excellent shooter, an excellent secondary playmaker and seems to be an above average defender. So if this holds, I think he's like Huerter-lite on offense, but can actually be a + defender. I'd pay 4/50- 4/60 for him in a heartbeat.