I am having trouble deciding between an Axiom VP150, or an Ascend CMT-340c center speaker. I am going to purchase Axiom's M60's as main's soon, so naturally I thought the VP150 would be a great choice for a center. Looking up reviews and graphs though, I found a lot of complaints about sibilance/brightness and a lack of bass. The Ascend center seems to be preferred online, but I am wondering if I will have noticeable timbre problems with the M60's and ascend.

Ascend center graph: Graph

Axiom center graph (found under the specifactons listing): Graph