I've seen the show and I do recommend BTOOOM!, the show is available on Crunchyroll if you want to try out the episodes subbed (the Sentai release is Dual Audio) before you make your final decision.
The show does take its inspiration to the likes of Battle Royale in comparison to SAO, and does a good job at making each of the 12 episodes enjoyable with plenty of action and interesting character and plot development. The show ends on a good note for more material as it's based on the manga which has three volumes released in English already. Like every anime these days there are some fanservice elements placed in certain points but it's not as bad as H.O.T.D. with the plot only used as a major plot element in Episode 2 and used on scene near the end of the series from what I remember. No nipples or ass are exposed, nor sex.
I gave the show a good 8-9/10 on MAL and others have given them at least an 8. It's one of the best but not well known shows of 2012.