Hi changho21,
I'm the developer of Flashcards Deluxe. I haven't used Anki for actual learning, so I can't help out. Most Flashcards Deluxe users don't come here to post answers, so you might not get a response from others here. Sorry. But below is a link to a similar posting here on this forum that does provide a little bit of information.
viewtopic.php?f=2&t=3992&p=11044I probably would just recommend using both for a couple weeks to see how things go. I think either program should work well long-term, so I think picking a favorite after a couple weeks of use would be safe.
In Flashcards Deluxe, you'll want to use the "spaced repetition" mode if you want a similar experience to Anki. You may want to read more details about how my SRS system works:
http://orangeorapple.com/Flashcards/AboutSR.aspxErnie