^ I think the 210 are a bit of an enigma. Lots of modern music has frequencies below 40hz, so using them without subs wouldn't necessarily be ideal. They have a use case - but if I was purchasing them I'd cross them over low to ported monster subs like the DTS-10 or jGallarhorn. These types of subs have unwelcome resonances above 60hz based on horn design - so you could have a BEAST of a sub without the negatives found in the higher bass frequencies - simply by crossing your mains over lower. That's my thoughts on how I'd use the 210 anyway. But I don't even need any more output over what my pair of Captivators provide (personally), so the 215 would get my nod over the 210 - since the 215 are fully capable of the entire audible spectrum.
FOH is right in my opinion as well. A solid bass foundation is more important for my overall satisfaction than having the absolute best speakers.
If someone told me you can keep
1) your previous wharfedale sapphire 89 speakers and your current JTR captivators
2) your current 228HT speakers and your previous pair of Infinity HPS-1000 subs or your previous DIY subwoofer ottoman.
AND YOU CAN NEVER UPGRADE AGAIN
I would immediately know the answer. The Captivators would be the one to stay. That's my bent. Highest quality subwoofers can make mediocre speakers sound better, but Highest quality speakers can not make mediocre subwoofers sound better (unless you turn said mediocre sub off -
)Edited by Archaea - 2/22/14 at 10:27am