Magico A3 or A1+Sub

Considering purchasing either Magico A3 floorstander or A1 bookshelf + Rel sub (Magico asub gets set up with computer and seems overly complex).  A key advantage is these are fully sealed and fairly shallow (10-12 inches) and speakers will need to live about 12 inches max from wall.  I have no experience with subs and could only fit one sub if go that way.

Would appreciate any guidance on what would produce best sound quality?  

Thanks,

Dokosan