Speakers for NAD C515BEE & C315BEE

Hello from Portugal! (My first post)

Based in several posts in this forum, reviews across the web and one final tour to the local hi fi store to listen to it, I finally made up my mind and bought the NAD C515BEE & C315BEE.a

I'm a huge Heavy Metal, Hard Rock fan. Therefore I will be playing this king of music 90% of the time.

Which speakers will be suitable for my system and for my music preferences, taking in consideration 2 factors:

1- Easy of drive 2 - Better bass 

Tannoy F1 (150 €), Wharfedale Diamond 9.1 (160 €),  Mordaunt Short 902i (228€)  or MA BR2 (300€)

Thank you.