Not PQ Lens on 6008 Pro

[=Tomash=]

I'm a new user.
I'm Italian and i have one Rolleiflex T Type 1 (the gray) and one Rolleiflex 6006 Mod.2 with Distagon-HFT 50f4, Planar-HFT 80f2,8 and Rolleigon-HFT 150f4.
I make a lot of BW and i development and print myself.

Question:
If i use may lens, all not PQ or PQS, on 6008 Professional, what more features for expose mode can i have ?
Now, with 6006, i've only expuse whit shutter priority, in manual not meter expose, with 6008P is better or equal ?