Maybe not, and it is not "Kosher" with the thinking of many audiophiles for 2-channel stereo. My thinking it that it is Kosher if you want deep powerful bass that most full range floorstanders will not give you. Most floorstanding speakers, will get you down somewhere in the 40-Hz. range. Two things, if you want to go down lower and if you want stronger, more authoritative bass, then a separate sub woofer or subwoofers are called for. I think that in making a speaker comparison, we should have a bit more information as to exactly what model Polk speakers your L100's are being compared to? As the owner of many Polk Audio speakers, I can say that the LSiM series are truly "flagship" speakers. When you are speaking of large 100-lb. towers, I hardly think that they can be referred to in the same sentence as "bamboo". I would speculate that the majority of speakers today are built as towers for a few reasons. To reduce the "footprint" so as to not take up as much floorspace. Since most fall short of the ceilings, I assume that "height" is not so much of an issue as floor space is. Most buyers today are using speakers more for HT applications, then just for stereo (I use mine for both). Since TV's today are far larger and located higher off of the floor than TV's were years ago, the towers sit comfortably along side of today's TV screens. The speakers closest to the TV screen are Polk LSiM707's and the outer pair of speakers are Zu Omen Definitions MKI. Many speakers that sat on the floor years ago, had tweeters which were not at optimum listening heights, tower designs address that issue. I think that big cabinets and large 12" and 15" driver's are important to move a lot of air. We just don't see many like these available new today. L100's don't come close to matching what speakers like these are capable of. In a less than "large" listening room, large towers will do the job that is necessary to pressurize good size rooms. But, if you want to take things a step farther, then a good sub or sub is something to be considered. Tower or monkey coffin size speakers can both equally benefit from a sub or subs. I use subs and Litejazz53 uses subs. Yes, they do very much "cut the mustard", at these sale prices, you are not going to find any speakers that can compare to their capabilities. They are not tiny. Home speakers today are not built like speakers were back on the 50's and the 60's. If I were going to have a pair of home speakers that had both an authoritative "punch" and excellent all around audio quality (audio quality being the keyword here), I would get myself a speakers like these. The L100's either new or classic, as you say, are not designed to be powerful floor standing speakers, which they are definitely not. When floor space is at a premium and you don't want to make sacrifices.