Speaker upgrade question.


Hi all, 
I haven't been here for quite a while as I've been happy with my KEF Reference Three-Twos driven by a Musical Fidelity A308. They're both vintage but they sound great together and fit my somewhat weird room. I'm pondering spending some bucks in the 3-6K range for new (used) speakers and I have a few questions. Thanks ahead of time for anyone who's not too busy to help.
First, would I be  upgrading beyond what my amp is capable of keeping up with? The MF is fairly powerful, but I'm not sure of its limitations since they don't show up in my current system.
Secondly, how high up the price ladder would I need to go before I'd find speakers that offer an obvious improvement over my KEFs to most ears. There would be little point to pony up money for a comparable sound, however much I subjectively prefer subtle differences.
Finally, for reference purposes, can anyone tell me how the following modern speakers might compare or contrast with mine? (Some aren't in my price range, I know) Triton 1R, Kef R7, comparably priced Monitor, Revel, Gato, Paradigm, etc. I wouldn't mind a bit more punch and a bit more bass than I have now, mostly just to experience a different sound - I respect the KEF signature sound.
I know that sometimes it's hard to accept the premises of these types of questions since such matters are so subjective and a lot of folks like to lobby for their favorite brands. I guess I'm not seeking advice about what to buy. I just want to understand the benefit to me of more modern speakers. It's quite possible it makes no sense for me to upgrade.
Thanks again.
Marc
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A few years ago my neighbour had the same question about his KEF103's. I suggested that he spend some money improving the crossover components; that is, changing cheap capacitors for fine audiophile capacitors, etc. The sort of thing that no manufacturer can do.

Anyway, he went for it, I rebuilt the crossovers with premium components, and he couldn't be happier. The sound is similar to what he had, but far, far better: more refined, accurate, punchy, and easy on the ears. So if you like what you have, but ... Then I suggest that you upgrade the crossover. Don't change anything but the quality of the parts, so a 2uF cap is still a 2uF cap - just that the one you are putting in is an MIT RTX costing about 100 times what the original part cost.

You might need a new box to hold the new components, as they tend to be a lot bigger as well as more expensive. Parts can be obtained from Parts Connexion or Michael Percy.

DIY forever!
I point out that you’ll have to spend BIG bucks to get the same refined sound direct from a manufacturer. Whereas the crossover upgrade is well within your budget.

I've done it with Magnepans, I've done it with Quad ESL's. Always a significant improvement. For your KEFs, maxing out within reason, probably 2-3K per. I like copper foil air core inductors like Alpha-Core, MIT multi-cap (RTX series) capacitors, Mills non-inductive wire wound resistors. You CAN do better than these, but it's costly or tricky, or both. Start with these brands and you can't go wrong. When I tested parts, I found some that were far costlier but much inferior. With the suggested brands you really can't go wrong. 
Hi all. Thanks for your input.
Rodge: It's a large, weird room with no real corners, lots of open areas, a wall of glass, a thick rug, and a complex slanting ceiling. The walls are veneered plywood. So basically it's a crap room for audio and there's nothing much I can do about it, Otherwise, it's a wonderful room with a fantastic view.
Tomic: can you tell me more about your post. Assume I'm an idiot, which I mostly am about all this.
Another question: I'm using the wireless Audioengine devices because physical wires from my Mac to my amp would be a mess in my room, and the DAC in them is decent, if not at a level that matches the rest of the system. So if I upgrade the DAC, I have to let go of the nearly lossless wireless function. Is there a solution to this?
Ijerens: thank you. That info is very helpful and may be what guides me the most in the end.
I'll look into the Moabs, of course.
m

I just read your post, Terry. It sounds like a great idea, but I'm intimidated by it. Would I be likely to find someone who can do the work? What are the odds someone would screw it up?