The Etap2 HW is fantastic value and the one that Ecca built for me has the valve pre-amp and I have added green and blue LED lights inside to 'backlight' the controls which look terrific. The sound is also terrific and is hard to tell from the real thing when used with the band. The Hall & Collins also does the business and is better because of the way it is laid out with easy access to the very accurate patches mid gig via the foot controls. I don't think either of these units are expensive for what they have to offer. The ESE Echomatic cost over double the price of the Hall & Collins, but is real as it is mechanical and employs a motor, valves and a tape loop, making it more authentic with all the quirks that this combination provides, such as the little defects and nuances that are very musical and feature on the old records. I can hear a difference for the better since at last finding a very compatible tape to use with it. The tapes I had previously sadly let it down, but now it's the best I ever heard.
That said, unless you can play with a similar style and feel to the way Hank did, none of the above can be a 'magic bullet' and replace that element, which should be considered before buying any of them. I have witnessed people who have drooled over my equipment and then tried it out manage to sound nothing like they had hoped they would, simply because of their input, or lack of it. Charlie Hall once told me that at a Hank concert at the sound check when he used to provide Hank's echo machines, Hank invited him to play his guitar and even he suffered the same fate and Charlie is a very good player - food for thought.