Nice get! I've been meaning to pick that game up myself. I've been pretty torn between that or Bullet Soul, at the moment. Either way, it's going to be nice to pick up some non-Cave/G.Rev STGs for once.
I want Bullet Soul, too, just not interested in paying $90 for it.
If it helps your decision any, a large majority of people prefer Eschatos to Bullet Soul.
There's a Bullet Soul demo you can download, but I don't recall ever seeing one for Eschatos. Maybe I wasn't looking hard enough.
Waiting on the other mk2 avatars.Patiently.
<--- Click to support the localization of Toradora Portable!
Still holding my breath for the other Marl Kingdom games.