If you can stretch to 1.5k then definitely try to find a lotoo paw gold touch secondhand and call it a day.
Really depends on the set some will synergize with certain daps/sources better than others. If we are talking the fourte specifically or even just 64audio in general, you won’t have any trouble with either the QPM or lpgt. The 64a stuff in general is less picky of source than a lot of other brands I have heard of course that doesn’t mean it won’t sound better with a better dap but it certainly won’t sound like shit either. If you go lpgt that is pretty much a endgame dap imo so don’t really have to worry either way