50hz deep enough?

Also I should add the generally I listen between 80-90dB and 90-100dB for classical.

I just try to keep it subjectively right. ie. If someone is singing I would like it be be the same level as they were actually in front of me and the same goes for instruments.

Only during classical music peaks would I ever dare to break 100dB, and I would do this once in a blue moon.

I should also add that this has all been mesured in C wieghting with favors the high frenquencies more.

I would buy the one with better midrange every time, especially for classical.

I should add the by far the music I listen to most is Rock. Whether it be hard or soft or acoustic.

I must chime in as someone who has always owned monitors...even in "larger" rooms(such as my current 20 x 16 room)...at any rate...the majority of listeners often have a speaker that is WAY bigger than needed in real room applications....part of this is due to dealers who often push larger speakers,etc...bottom line...even in my room...with my speakers well away from walls...I have a surprising amount of bass(especially on a well recorded cd with bass prominent material)...at my speakers are rated at 50hz...another consideration besides specs is the internal volume of your speaker...larger monitors often "behave" like they have much more bass than one would think...and if pushed...more than smaller floorstanders in some regards...

i'll chime in as a heavy metal listener. You can add a good quality sub to most any speaker lacking in the ability to move a lot of air (such as a planar) and for metal and HT, you'd hardly notice the difference compared to an expensive-to-execute floorstander. On acoustic music (classical, jazz, folk/ethnic) yeah, you'd notice the slight disparity between mid-bass and deep-bass. but with most metal and HT, it's close enough (at least for me). That allows you to budget for a better speaker in the midrange.

but like all things, you just have to weight your sonic tradeoffs.

also don't over look reports where people have upgrades to better sources, preamps, and amps only to find that they no longer NEED a sub, as they have rediscovered more than enough quality bass from the current speakers to satisfy their needs. Before you decide that you need full range to 20Hz, listen to some really well done speakers that extend useful output to 40 or even 50Hz. You may be surprised. Then again, you may miss that output. Depends on your priorities.

For rock and for a lot of listeners it depends on how much kick drum (or should I say cow bell?) you get. you just need to aim for a satisfing amount. Not enough, and you'll be left wanting. If even enough, you won't be wanting more and will enjoy the midrange purity that you did not have to sacrifice (hopefully) to get there.