Upgrade from Merlin VSM-M to What?


I have a wonderfull pair of Merlin VSM-M speakers, but I want fuller range. I have the balanced/single ended battery bam and it does extend the bass, but not as low as some other full range speakers. I have been lead to believe that my Karan KA-i180 integrated amp could sound even better with fuller range speakers. I don't want to spend a bundle of money. I just purchased a Pioneer 5060HD plasma and my budget for speakers are $1000.00 more then I will get for my VSM-M's. So my hope is for used speakers costing between $4,000.00 - $4,500.00. My thoughts are toward Dunlavy or Eggleston. Shipping these speakers must be taken into account. I do have sub woofers, but don't use them. They are Velodyne servo 1200's. My integrated does not have preamp outs and I think using the subs x-overs in the speaker line would harm the sound.
stereo
How is it possible to integrate a sub into a system using the merlin bam and having no preamp outputs in my integrated? I don't need 28 cycles, just more of what the VSM's do. I am afraid to ask what the upgrade cost is to the MX and Super-BAM + shipping. My budget is $1000.00. I am surprised at the used asking price of VSM-M speakers. I purchased mine used. At $7200.00 new and asking less then $2500.00 used seemes cheep. Other speakers that are older and cost about the same new are asking, and I assume getting $3500.00 and up. Why?
I recently bought a used pair of VSM-MXs, and upgraded the BBAM myself to work with large external SLA batteries. This upgrade (or doing the Superbam upgrade for $450 thru the factory) will increase the performance of the VSMs by an astonishing 30-50%. They will have more bass authority, bigger dynamic envelop, tactile realism, and greatly reduced midrange and treble grain. I have not heard speakers at any price surpass the Merlins in refinement after these mods. If after upgrading the BAM you need deeper bass, then sell your amp and get a preamp with a line-level output to a sub.

Also, have you properly set them up? The bass extension of the VSM is finicky-- very dependent upon placement and correct use of the spikes/cones.

Don't sell them!!

Dave
If I had to choose one update would you think the BAM update over the MM update? $450 for the bam seems good.
Just call Bobby @ Merlin & talk it over w/him. Your other gear might determine which upgrade makes more sense. He is the most trustworthy you'll find, and he knows what he is doing. His advice is hard to beat. Cheers,
Spencer
It would make more sense to aquire the "Magic Mod" upgrade than the "SuperBam", which is icing on the cake.