Center Channel Design and Matching

Starting to look at center channels for HT use (not music), and had a couple of questions about design and matching to the front L/R.

Some centers are designed with two identical drivers for mid+bass and a single tweeter. Larger centers may have two drivers for bass, one for mid, and a tweeter. Then there's the coaxial designs like Kef's uniQ with a tweeter and mid together, plus two bass drivers. Any advantages/disadvantages to the different center designs?

Also, is there any advantages/disadvantages to the center channel bass/mid drivers not matching in size to the front L/R speakers (I know they should timbre match)? I'm considering getting a center channel with larger drivers than the matching towers for better performance in HT.

I'm still in the process of pulling the trigger on my front 3 speakers for a 3.1 set-up (got a F12 from Rythmik already), and since the system will be used more for HT than music, the type of center channel offered by different companies may sway my decision on which speakers to purchase.

Thanks for the info!

I've been on the forum for a few months now and don't recall the seeing the threads. I'm also incompetent at finding anything useful with the search function. I look again, but got a link?

Thanks! These threads answered most my questions.

I need to pay more attention

Thanks for the reply. I was clear on matching the series (same speakers for L/C/R won't work for me), but even within the same series there are centers with different size drivers. I was curious if matching bass drivers between the center and tower (tweeters and mids the same in both) is important, or if there is something to be gained by using a center channel with larger bass drivers other than output.