Low-end vs. High-end interfaces, what's the real difference?

Budget interfaces and high-end interfaces, what’s the difference? This video breaks down all aspects and explores the recent technological developments.

Timestamps:
00:00 Intro
0:57 Section 1: Audio & Data connectivity
7:00 Connectivity wrap-up
7:50 Section 2.1: Pre-amps
9:07 Section 2.2: AD/DA Conversion
11:30 Section 3: Features
15:30 Section 4: Tailoring & Modularity
17:25 Outro

Some interesting Youtube videos on the topic:
- Paul Third, ‘Do you lose audio quality in analog gear using budget audio interfaces vs expensive AD/DA converters’:

Audio interfaces that caught my eye: