Zephyrkitty
I bought and watched the first volume of
Simoun in November. It has a lot of promise so far, and I like yuri myself. I've also been hearing that it doesn't really pick up until episode 8, though.
Volume 2 comes out at the end of the month, and volume 3 comes out in late April. I don't know about volumes 4 or 5 since the release schedule's been inconsistent, although I'd hope they come out in late June and August.
Remember that the MSRP is $20. Odds are you'll pay less; Best Buy had it for $15.
MSRP or below, it's still loads cheaper than the series I'd been buying. I got mine for $18 off amazon.
Honestly, before I watched this series, I was expecting the CG imagery to be awkward and noticeably off-putting. I'm glad I was wrong.