Ок,I can't really recommend to much on dac's but heared good stories about Hiby FC3 and FC5 or the Shanling UA5. I am planning to buy the FC3, seems more than enough power for the se846 and runs on ESS 9281Pro chip which is a low power high quality dac. And the FC3 is a really good priced (small) dac and can be ordered together with a lightning cable.
regarding colors, what I like about the gen2 is that de new colors Jade and Graphite is color combined with clear, so best of both worlds.
I understand that there is no ShurePlus PLAY for imac or macbook.
In that case RMCE-TW2 it should just connect directly via bluetooth? How does it sound without ShurePlus PLAY via imac or macbook?