Many of us who have the 270 pair it up with Merlin Milleniums. This is one of the best matches with Merlins, along with Joule. I'm not sure how much bass weight you want, but given the design of the Merlins w/ the BAM, you won't get the absolute lowest octave. Having said that, I have plenty of bass weight in my system, but I must point out that I have a pair of modded 270's running as monoblocks and a preamp that has the best bass control I've heard personally. I am amazed at how much bass is coming out of that 6.5 in. woofer.
As far as smooth, warm and laidback, well, Merlins pretty much put out what you put into them, but generally are noted for being more neutral and revealing than warm and laid back. They are NOT bright, unless your upstream components are.
Also, there is a new iteration of the Merlins, which I haven't heard, but there is a thread in Speaker asylum where Bobby P. and other discuss the sound of the new version.
As far as smooth, warm and laidback, well, Merlins pretty much put out what you put into them, but generally are noted for being more neutral and revealing than warm and laid back. They are NOT bright, unless your upstream components are.
Also, there is a new iteration of the Merlins, which I haven't heard, but there is a thread in Speaker asylum where Bobby P. and other discuss the sound of the new version.