Thank you for taking the time out to write everything, it's incredibly helpful!

I had some false memories about the BTR3K I dunno how I remembered (incorrectly) that it didn't have Aptx LL. I think I confused it with UTWS3. Now this is looking like a really sweet deal. The Qudelix is way too expensive in my country (costs the same as the UTWS5), I was looking to buy these atleast after March so I might get lucky with sales maybe. Since it has a replaceable battery it won't become paperweight after 2 yrs.

I did find a video about the btr5(similar codec-wise to BTR3K) by Teknickle but he doesn't address Aptx LL a lot. A comment below the vid does say that - if both had Aptx LL, latency is not an issue.

I can't actually discern HQ and normal audio so high fidelity isn't my main concern, ik this is controversial but I couldn't find the difference between Spotify very high quality and a lossless file most of the time so getting expensive DAC's would be a waste.

The Aptx LL transmitter would have to be imported coz there are no good transmitters here. There's Ugreen but people complain bout transmission losses all the time, Fiio BTA 30 is available too but it's price and size make it unfeasible for mobile gaming scenarios. I'll go for Gulikit transmitters, they are cheap and won't be taxed by a lot. Last time I imported my Truthear x Crinacle Zero, it was so stressful all thanks to the country's postage service, I mentioned it on the gaming sub; makes me wary of imports. I did underdeclare the cost but they managed to take 30% price due to postage etc and had ripped off the outer packaging too (like get an x-ray machine lol).

I think I've made up my mind on the combo of LL transmitter and BTR3K. Qudelix is out of stock on 2 stores which sell in India (3rd doesn't keep it) the
Qudelix price = LLtransmitter + BTR3K
But the advantage of Qudelix is I don't need a transmitter, phone has Aptx Adaptive. I've put my name in the notification box if it comes back.

>Furthermore, 5K draws its system power directly from USB when working as a USB DAC. In other words, 5K does NOT draw any power from the battery when charging. It helps keep the battery life longer, and it ensures the same battery charging time even while streaming audio.

I really like this bypass system, would work really well during listening to music.