I would appreciate suggestions for an EUB that is great for arco, relatively quiet or silent when not amplified, travel ready, and has the same rib and heel placement of a DB. For example, I am very intrigued by the Alter Ego, but I would like suggestions of alternatives (particularly less expensive alternatives). (Thanks to Ray for pointing out the Alter Ego.) I'm sure the Eminence and the Azolas are nice instruments, but somehow the extenion which places the instrument in the right position doesn't appeal to me. I prefer the simulated ribs of the Alter Ego. The Merchant bass is also interesting, but it doesn't appear to be quite as travel ready as the others. I'd appreciate any impressions to the contrary.