I'm a big RPG fan, and have been eyeing Crimsonheart, Lunar Silver Star Story, and Avernum:Escape from the Pit. Are these worth getting? I'm after a lengthy game for my money, but not really interested in those 'generic' J/KRPG's.
Lunar Star Story and CrimsonHeart are worthy (can't comment on iPad one). Also consider Fall of Angels (JRPG) and Kingturn (SRPG)
Kingturn is the one I've been playing of late - it's pretty damn good. Thumbs up from me. Haven't played the others you mention.
The quest gold it comes with two of the 15 expansions and has over 200 hours o gameplay by far the best rpg on the store if you don't mind 90s graphics...