the most important feature to look out for with Timber Fram emanufacturers is that they are NSAI approved....
Carefree,
To date I have not had any experience with Ecotech, but I could give you the names of a numbers of other timber frame companies.
Are you looking for a one of house or large scale (development)?
Currently I have a contractor building 120+ large houses for me and find then great. They need supervision and direction but most timberframe companies do.