You will find them warm and musical. They light up vocals, the female voice is a specialty, and they really love vintage analogue vinyl.
The 7es3s are exceptional; actually, my favorite in their line. They were developed in tandem with the BBC studios and were made to be listened to over long periods of time. Pleasing is an understatement. They have a fat mid-range, modest bass, and the 7es3s are a little better in the higher frequencies than most BBC-oriented speakers (i.e. Spendor and Tannoy). They were designed for mixing rooms and editing bays, so they will excel in small rooms.
PS: I have been in the live music and event marketing space for 30 years. I have used ATC speakers for professional editing, where knowing the subtle differences in tracks are most important. ATC are very detailed and neutral but typically need 100 watts of amplification. Like a bone dry white wine. If I had to choose one set of products for a dream, at-home system, I would recommend Shindo and Harbeth. They remind me of a warm red wine. I could see myself having six hour listening sessions on a weekend.
PS: How do you like your Shindo products? I have been eyeing them myself.