If you are going to use the HD-800S, then look into upgrading your DAC and amp. The JDS Atom amp is a nice entry amp, but th equality of the HD-800S will scale with your gear improvement. If on a budget, a Schiit Asgard 3 + DAC of your choice would be a nice budget option. Even modded, my M300 MKII will trump the Titanium HD as a source.
On another note, I picked up a very nice set of TWS buds on Amazon, the Mpow M30's on the cheap. They use 6mm diaphram drivers, have Bluetooth 5, IPX8, and use Harman Curve tuning, I was rather surprised by the sound quality, a step up from the M5's I own. And due to Amazon banning Mpow's retailer acct due to playing games with getting positive reviews, they changed their name, and is clearing out all their Mpow branded gear. I bought these in black for $19.99 + 40% off coupon for a final price of $11.99. I just don't care for their stock silicone tips, and will be swapping them for some memory foam tips.