Which DAC makers let you do in home trial?

Ok, I feel very well advised. Here are a couple additional details and a question. 
An audiophile friend with advanced experience and system echoed many points here; he suggested a modest cost unit, (even used, $400) including Schiit, iFi, Denafrips, Audio G-d. He assumes it will be changed out by me in time but notes, also, that it will be fine for a long time, initially. 
Another commentator on A ‘gon also suggested some brands here. Audio Mirror, Bryston, MDHT among them. 
Harley in his book, and the commentator above, both emphasize the need to choose the amp, first. Since I don’t even know if I’ll go tubes or solid state, or which speakers I’ll settle on, there are many open questions; but it seems this advice is right. 
 (It may irk some here to know how in flux my system is; I’m researching DACS  so that as first things fall into place, I have done some advance work on subsequent choices. This is not overthinking but just planning out future decision processes. Each of those decisions will be among a modest set of selected options.)

I can close with one last question: Do you agree that I settle on amp first and dac second?

DAC's don't  have sound signatures unless they are purposely made that way. The job of a DAC is to convert the digital signal to analog with the least noise and distortion to convey that signal in the most accurate way. Some DACs add different filter settings to get differing sound characteristics, tube DACs and most R2R DACs roll of the top frequencies to give it a more analog sound. Some prefer that and that's fine I am not criticizing anyone's choice just pointing out things the OP might be interested in. I have not recommended the Benchmark just used it as an example. I don't really like recommendations of what someone else likes as it might be completey different from what I like which is why I said try as many different DACs as the OP could to get a feel for his own preference. 

Speakers first, amplifier either seperate or integrated, source. CD player, Streamer Turn table or whatever your preference is, DAC last it has the least impact or should.

Thanks so much. Noted those point. 
 I have a transport so I assume that’s a bit out of order, but in general this is my current path.