Opinions on Islamic boy's name

[Sonkey]

Zahir
Zakir
Iyas
Iyas

Any thoughts on these names? Are they nice/easy to pronounce?

Sorry, typed Iyas twice should be Iyad.

Zahir - Zaheer
Zakir - Zakeer
Iyas - Eye-as or ee-as?
Iyad - Eye-ad, Ee-ad

I think Zakir is my favourite, it's lovely.

Zakir

I prefer Zia

Zakir sounds lovely