Totem Beaks

Funny you should ask as I just went through this. I use Beaks for my Mani-2's and tried them with my 3A Sigs. Absolutely no effect I could discern in any configuration. Remember that the wooden caps to the 3A's are not part of the speaker exclosure in the same way as the Totem's traditional box. What has made a difference however is making sure that the bolts holding the 3A's to the stands are finger tight; mine had loosened which adversely affected imaging.

I think that Beaks won't suit Vandys since they have a soft top.
They tend to tweak a solid cabinette vibrations. Vandy's are only clothed but not enclosed.
I use mine on Totem Speakers and they somewhat serve as room adjustement since you can clearly adjust a radiation of the high freequencies moving them at arround above the tweeter.
To use it just at arround the edge won't make a sence.

I owned beaks for my Totem Arros for 6 months and sold them. Tried different configurations, blind tests with/without beaks (and right only half time).

Conclusions: Looks cool, but not worth MSRP, buy it used on audiogon or ebay for a try

Try the Sonic Surfboards, they improve the mids and highs and staging on a wide variety of speakers. From my Dunlavys to Thiels to Paradigm, all sound better with the addition. ..Tom

Info on Totem Beaks:

http://www.hifi.com.sg/products/accessory/totem/beak.htm