$3000: upgrade Tyler Linbrooks or amplification?

HI,

I am going through my 2-3 year upgrade itch, and was looking at ways to spend $2000 to $3000 into my system. My question is this: should I be looking at a $3000 speaker upgrade, or should I be spending that money on amplfication? Where do most of the benefits come from? Honestly, in the several years I have been doing audio, the biggest benefits have always come from speaker upgrades, assuming the associated electronics weren't crap (and mine aren't).

Currently I am running the Tyler Acoustics Linbrook signature speaker, a McCormack DNA-125 revision Gold amp, and a borrowed Dehavilland Superverve (C-J PV5 was in my system). I was planning on throwing a bunch of money at the preamp, but the Superverve sounds nice for the price, so am likely set there for a minimal upgrade cost. That leaves $2500 in my budget. For that, I could likely:

1) get a nicer set of speakers. That gets me close to the new Tyler D1's, or another very nice speaker. There is a dealer nearby selling the Devore Gibbon Nines that I could afford (hoping to get them home for a test). The Tylers are very seductive, so I would obviously be interested in his new D1 as well, or anything else I could get for $6000-7000 (Merlin maybe)?

2) upgrade amplification (take my amp to Platinum status for another $700), get something even nicer than the Superverve preamp.

3) Keep the money, in case the economy really goes down the toilet. System sounds great as-is (but it can always get better, right)?

I am also budgeting another $300 for room treatments. I can't go too crazy there, as the listening room is also the living room, and my wife hates the look.