Important questions:
1. How many sources does he want to record at the same time?
2. What kind of signals does he want to record? (only synths?, microfones?, a guitar or bass directly plugged in?)
3. Thunderbolt is overrated if you don't want to record 20 channels at once. You shouldn't base your decision on the kind of connection.
4. Is iPhone/iPad connectivity a must? If so, most newer interfaces work, but those with internal software and routing capabilities might not work. You need an interface that can be powered independent from the USB connection to the device.
I have a Motu Ultralite, a SPL Crimson and a budget Zoom U-24. The Zoom offers a lot for the money.
But if one of them meets the requirements and fits into the budget, I would definetely have a look at the offerings from Audient like the ID-4 or ID-14. The ID-22 or ID-44 might be too expensive!
They have very good audio values and latency and very good mic-preamps, even the small ID-14 can be expanded via Adat. Might be very subjective, but if I would get one as a gift, an Audient interface would be something special for me. Zoom or Focusrite: I'd buy them for myself when I'm on a budget and wanted a lot for the money and still acceptable quality.