Want to upgrade turbo m5 f10 s63

[wheelpro]

I want please to upgrade my turbos m5 f10
I want your recommendation please
stage 1 or 2
Cause big different price between them
And which is better for safety for engine stock internal
, for our fuel in egypt 95 = 92 Usa
I will use methanol
, for new setup need to flash dme ! Or only use jb4 like i used with map 8 !!

I saw both total record time on pure site both 10 sec in 139 mile
Thanks