Are you talking about $1500 for a single channel... or dual...or $1500 for either?
Not on your list (and you have some nice preamps there)...but you might check out the Groove Tubes SuPre at Sweetwater.
Even though the SuPre is not in production since Fender bought Groove Tubes...Sweetwater apparently bought out a pile of leftover units, and is now selling them at a really nice price - $999...where they list up normally at $2K.
I bought one used not too long ago (before Sweetwater's close-out deal) for $950. It's a pretty nice tube preamp....not their monster ViPre that got a lot of good press, but also cost more than twice the price for a single channel...but the SuPre still is a damn good preamp. It isn't real "tube-y" like some expect...it doesn't get all woolly if you push it. It's actually pretty transparent, has LOTS of gain, and you have to watch that, as I noticed it's easy to go over the line and then the meters are spiking, which can get you a touch of grit in the signal, so I've learned that it doesn't need to be driven too hot...and then it sounds pretty darn good.
I'm staring at the Sweetwater price and almost tempted to get another one (just because of the price) but I want to get another solid state pre next, and I'm leaning toward a Vintech X73i...or I would LOVE to get
a Langevin Dual Vocal Combo, but the prices on them just shot up a lot, so even in the used market they are fetching around $1500, where they could be had not too long ago for $1000-$1200. I could kick myself in the ass...last year I could have bought a used one for only $950!!! It was one of those rare eBay listing that just went by unnoticed.
Anyway...check out the SuPre...$999 for a brand new 2-channel tube preamp ain't too shabby. It's got great I/O options, including a buffered DI...and it also has a 3-position mic impedance selector.