I think I prefer the Rythmik E15 or the Martin Logan Dynamo 1500X. They are both sealed subs, 15" woofers but in a very compact package that fits where I want it to go. I am looking at either of these as a hybrid of sorts, with emphasis on music first (the reason I am on this site as well as the rest of you). Going with generalizations, the sealed subs tend to be smaller and tighter, but these also go pretty low for some HT application as well. I have studied many reviews of both, and although neither excel to the top of either of the 2 uses (music and HT) they are the best hybrids I can find for range, sound quality, adjustability (eq built in or room correction), and size. Maybe I am missing something or some brand, but I have looked at so many, I narrowed it down to these 2. They are both in the high end of what I wanted to spend, and actually over, but no need to get cheap now. I am not sure how easily I can adjust the Rythmik since it is manual, as I basically know nothing about it doing such things, and prefer not to invest any more time into doing the research and investing of time or money to buy any more equipment to analyze things. Placement options don't really exist, so I need to do the best with where I can fit it. However, I know that customer service on any of these is top notch, according to my phone calls and others' reviews, so I think their help will make up for my lack of options and knowledge. The ML has all this built in and will automatically do it for me. My AVR has the same thing for my other speakers, not the sub, but I have already adjusted that because I didn't like the eq it did. So I am torn as to which way to go. I honestly don't know which is better and how easily I will be able to tweak, if I even need to. Regardless, both are a substantial upgrade and look forward to the purchase of either. I know my ears determine a lot, but please understand that I have never fine tuned anything like this manually, other than tweaking the auto setting of my MCACC's eq. I don't want to be second guessing what I am missing (if anything) but rather err on the side of caution. In other words, I think I would rather have the eq even if it ultimately does nothing than not have it and not know what I screwed up, potentially. Maybe I am worrying too much, so advice is once again appreciated. I am leaning towards the sealed subs because of size limitations and supposed clarity, and was looking for the increased driver size to get a bit lower like a ported typically accomplishes.