Thanks, I'll go for the BK2.
Question, which I haven't been able to narrow down after searching this thread, are there are recommendations for good tips with earbuds (like there are for IEM's - Comply, Dekoni, Spinfits etc)?
I see a lot of generic foam covers, donut style foam covers and silicone winged eartips on Aliexpress. Wondering what I should try out.
I think there were a few helpful posts here from other headfiers regarding donut foams vs full foams + importance of density of foams:
https://www.head-fi.org/threads/earbuds-round-up.441400/page-3067#post-15321503
https://www.head-fi.org/threads/earbuds-round-up.441400/page-3067#post-15321506
https://www.head-fi.org/threads/earbuds-round-up.441400/page-3067#post-15321507
Credit to these guys.