'upgrade'' to Amiko A 2 from Openbox10?

Hi all,

I am considering 'upgrading' from my s10 to a dual tuner. I am on a budget so I am considering the Amiko Alien 2, or, possible, the Golden Media Spark.
Just wondering what to expect from either. Main questions:
Is PVR functionality good? (It's effectively non-existent on the s10)
What's the EPG like?
How user-friendly/how 'easy' to set up?

Many thanks!
cdy