Splurged a little and ordered the regular sized NX-01 and Enterprise-E from Amazon.
I've gotten some off ebay. If you live in a big enough town that you have a comic/collectible shop or two, I suggest giving them a call. They might carry some of the re-releases of the "hero" ships that came out last year.
And yes, Fuller told the Klingon ship designers to ignore the previous series/movies designs.
I think that's rather unfortunate. The lack of design continuity with the other series in terms of ships, make-up, sets, and uniforms are part of the reason I still haven't checked out the show yet. (That and the fact that I feel like the mirror universe and Section 31 have become tired cliches by this point). In the past, I've pointed to the film "Rogue One" and how a film from 2016 can use designs from from the late 70's/early 80's and still look good and look like it fits within the era of the original trilogy.
Discovery looks as different from TOS as TNG did, but the latter show had the excuse of being set a century after, not a decade before.
I don't mean to be yet another one of those online haters, bashing the show for anyone who enjoys it. I'm just stating my problems with it.
The FC ships minus the Enterprise-E were designed by Alex Jaeger. I'm not too fond of his designs either.
With the exception of Voyager, which was probably meant as more of a science vessel, most post-TNG 24th century ships have a harder, more militaristic look to them. I think this makes sense if they were designed after the introduction of threats like the Borg and the Dominion (whereas the Galaxy and Nebula classes seemed to have been designed in a "golden age" of peace for the Federation).
Some are certainly better than others (I prefer the Akira and Saber to the Norway and Steamrunner) but there's none I actually dislike.
My only nitpick with the "First Contact" ships (and this may indeed be a nitpick, since you can't really see them on-screen) is that I thought the registry numbers were far too low, making them older than any of the Galaxies we've seen. I wish they'd had numbers more contemporary with the runabouts, Defiant, Voyager, and Equinox to help sell the premise that they are newer designs too.
I've been thinking of getting the Voyager concept ship from the online store, but $42 CDN, plus shipping is a bit much for me (especially since I just spent two weeks racking up credit card debt in foreign countries), but I figure it wouldn't be so bad if I got a second ship and thus free shipping. Unfortunately, none of the other ships I'm interested in (Bonaventure, Enterprise-F, Cheyenne) are currently in stock, so I guess I'll have to wait.