If you were alive a decade ago, you already have. When the SSD transition started the MacBook Air was a surprisingly good value with a better quality SSD than almost any of the PC options at any price (integrated controller versus the overhead of a separate chip) and most of the sub-$1k competition had spinning metal.
I am an anti-fanboy, not buying apple for the last 6 years, but couldn't resist its value now. Sounds like a good time. Buying M1 today is quite a good timing strategy guesstimating M2(or whatever name) with 32GB+ will come in next 2 years or so.
Wait for real world reviews, the indications here are that apple will catch up and be a good price/performance if not better but the jury is still out.
The XPS's CPU only has 4 cores to the Air's 8. Dell would be wise to ditch Intel for AMD so that they're competing with the same TSMC 7nm silicone as Apple. Intel is in trouble.