Cannot speak to the A3 (I'm not the ebay buyer) but had many problems with the alien2 switched it to european side deleted the european stuff made up a NA sat list left .68 in place never glitched again. But and a big one I don't use the spark side much but use HDMU and tsmedia. Part of the reason for the european version the alien2 is memory lacking and needed for iptv and doing this got the free memory upto approximately 120 megs but still need to run memclr plugin.
I would have loved to use E2 on my A2 to avoid the bugs in Spark, but nobody (correct me if I'm wrong!) ever produced a version of E2 with blind scan.