There are a few contradictions in your questions..
If the "Tea" at $1300 is more than you want to spend, then how can you consider the Lelit ( PL60T ?) which costs even more ?
.... also, if you are not a milk drinker, why do you think a dual boiler will be a rational choice ?
The Zafiro is well capable of steaming milk on the occasions you may need it.
PS..there is not much difference on size between the Tea and the Zafiro ? ( 30mm on width)