@krelldreams: I know of only one guy who has had both the MG3.7i and LFT-8b in his room and said he preferred the LFT. I’m sure I could happily live with either! While Guttenberg states in his video that he prefers the LFT-8b to every Maggie he has had in house, I don’t know that that includes the 3.7i. I would think the the MG3.7i and the LFT-8b are loudspeakers for two different groups of listeners: the MG3.7i retails for $8,000 and requires a very substantial amplifier (to get both high current and high sq is not cheap), the LFT-8b $3,200 and a more modest amp. I’ll bet the MG3.7 will better fill a larger room, the LFT-8 better in medium sized rooms. While the LFT-8 looks well proportioned in my 14’ 4" x 21’ room; I think the MG3.7i might overwhelm it.
I was active on the Planar Speaker Asylum site for awhile, and some of those guys really take their Tympani T-IV’s to the next level. Replacing the midrange driver with multiple NEO 8 drivers, rebuilding the crossover with boutique parts, bracing the panels to the wall, using 1,000-2,000 watt pro amps on the woofer panels, etc. I merely got myself a First Watt B4 crossover to use in place of the stock passive one (it’s an external box, which goes between the power amps and the connectors on the planar panels, not the optimum way to bi-amp), and used a 200w/channel PS Audio ss amp on the woofers and a 100w tube amp on the m/t panels. Sounds fantastic, but I just don’t have a room with the required width (a minimum of about 20 ft.: 4’ for each speaker, 8’ between them, and 2’ on the outside edge of each to the side walls).