Don't know about the Indoor/Outdoor thing, especially as 415 has won many of those type of events. But anyway, the main thing is like you said, the Evo4 is GREAT for Stock racing, perhaps even 19 Turn. The 415 is the better car for Modified racing. All the TRF Japanese guys say that as well, including Rheinard.
RCRacer.com.au - Dedicated Australian Forum and Website
XRAY | HPI | Hotbodies | Hobbies Australia | LRP Electronics | Futaba