To match up with planars you need a great sub. The Titan II LE is a great sub. Took me a year of auditioning and researching subs to decide on the LE. Man am I glad I did. The only sub I heard that I'd rather own is the Aerial, and it is about 4 times the price! If you want the opinions of others read the reviews in Positive Feedback, BFS, Soundstage etc or do searches at AA and AR. Great people to deal with too.