Do upgrade the firmware on the Klipsch The Fives. It will introduce a newer EQ which will actually give you a flatter curve than the original Flat EQ that it runs on.
Originally, the Flat EQ gives you a U-shaped curve. Which means, the bass and the highs will drown out the mids. So the audio in the mids will sound quieter than the highs and bass.
The Bass-Cut EQ actually gives you a flatter bass and mids. But the highs are still overall too loud and thus in this mode, you might find the audio to be a bit too tingy. But this is better as it is so much easier to Parametrically EQ the highs to be lower than it is to lift the dips (speaker flaw) in a graph to be higher.
For BanEle. As for positioning, rule of thumb is to always position the tweeters of the speakers to be at ear level or at least pointing towards your ears. Frequencies produced by the tweeters are very directional. That is why when you see a graph, they also show the lines like Early Reflections as the further away you are from the tweeters of your speakers, the lesser you can hear the highs of that speaker. Thus, leading to why you think there's a lack of clarity to the highs. The frequency curve will take a dip downwards very quickly and far down at more than -6dB even. Thus attributing to the lack of clarity further as the volume for the highs are too low to be heard other than the sweet spot. Thus, leading the advice by dreamaurora to toe-in the speakers towards your listening position.
Here's how the frequency curve of the Klipsch The Fives look on both the Flat EQ and Bass-Cut EQ. And for your interest in the KEF LS50 Wireless series, here's the graph for the Wireless 2.
This graph shows where you might be missing any details in the sound based or if your entire sound frequencies are being overpowered by the very loud highs. Anything above or below the desired line shows where a Parametric EQ can be applied to balance out the sound of the speakers.
In comparison, this is how the KEF LS50 Wireless II looks like.
With these 2 graphs, what you ideally want is a speaker that doesn't have any of the frequency response line being outside of the blue line. That is the ±3 dB window. Anything beyond it is either too overpowering to the other frequencies or are too soft to be heard that the other frequencies in the audio will overpower that part of the sound with its loudness.
So if you are able to be in that sweet spot, the KEF LS50 Wireless 2 will be the better option. Not to mention, KEF has a tweeter in the middle of the midrange woofer (which is ideal for many reasons including time alignment which increases your perception of a wider soundstage) as it means you will have a wider sweet-spot than a traditional 2-way speaker layout where it is trying to match the mid-range woofer with the tweeter towards a certain position. This in turn means you will get a wider soundstage and clarity with the KEF LS50 Wireless 2. Do remember to pair it with a great subwoofer and you will get the ideal audio experience possible. Do go back for a second listening session taking into advice asking them to use the Bass-Cut EQ on The Fives and on positioning the Tweeters of both speakers towards your ears so be able to really tell the difference between the 2 speakers. KEF LS50 Wireless 1 will be a bit worst. So do try to find a graph for it to have an idea how it compares to the other 2 speakers I mentioned as well.
If you find that the speakers are bass-shy, no worries. A flat/neutral curve will have that kind of feeling for us. Harman Research has shown we like our bass to be more pronounced and tactile. So you can ideally set your subwoofer to be about +4dB or +5dB louder than your speaker volume and it will not drown out your other audio frequency. You'll have to compare between the 2. Though with a Parametric EQ, you want it to ideally have a downward slope as opposed to a hard crash of difference in volume. So there's that. But I'm sure you'll find that sweet spot. No worries! Have fun!
Apologies GotBetrayed for my mixing of advice for him and you into 1 post.