I've ordered the Pico slim and plan later to get JH-13s. For me too, portability and lack of bulk is ultra-important. I tried a portable before, the Corda Move, and it was simply annoying. The Protector, as I've said elsewhere, looks like it has been rushed to market and the connector is un-tested. I'm sure it wont be long, if balanced portable amps take off, that better ones with digital volume controls come to market, which will leave Protector owners with an amp of little value. The TTVJ and ALO Rx look very interesting and it wouldn't surprise me if they tend to get overlooked because they are larger and less hyped.