Just read a review of your speakers on Stereophile.com. The reviewer liked the Snells but complained of the excessively "forward" treble. So perhaps before spending hundreds of whatevers on amps, PSUs etc., it might be worth trying some very cheap and reversible mods on the crossover, to try and tailor the sound to your tastes.
You could take out the tweeter and ad, say, a 2.2 Ohm resistor by cutting the positive wire and soldering in the resistor. This should reduce the tweeter output by about 2db and increase the woofer's. This is the simplest and crudest way.
The theoretically ideal way is to insert an "L-pad" of 2 resistors. For example 1.8 Ohms in series on the positive wire, and 27Ohms in parallel, i.e. connective negative to positive. This would keep the existing balance in the crossover. However, I've found that the crude, simple way can work very well. Remember that there is nothing "sacred" about a loudspeaker design, and the above takes about 5 minutes (plus a trip to an electronics store to buy the resistors, which should be rated about 10 watts)
Its actually quite fun, because with some trial and error you can obtain exactly the results you want. Certainly more fun than forking out cash for another piece of kit which might better satisfy one aspect of your taste, but perhaps leave you missing something you liked in the old equipment. But perhaps this is not the right forum for these suggestions. Try and post on the DIY and tweaking forum