I have had my M1 MBA 8/512 for 5 weeks now and have a few things I want to say.. Most have been over stated but figure It can't hurt to have more views of them.
1) Battery Life.
I use mine anywhere from 4 to 8 hours a day. Depends on how busy I am doing other stuff. But I have as of today 11 charge cycles. Part of that was I was shocked to get a machine from Apple with only 10% out of the box brand new. But yeah I charge every 2-3 days now. I get it on the charger around 15-20% and fully charge it.
2) Performance and having "only 8 gigs of ram."
I have yet to run into any issues. I am not a power user but I will have several tabs open in Safari and Radar Scope in 4 pane mode running live loops and maybe a scanner site listening to police feed all at once. (I track sever weather outbreaks for fun.) I have checked the memory in the activity monitor.... 7 gigs used but the memory pressure will still be in the green. So no concerns there.
Speed and smoothness is simply flawless. No lag, no beachballs yet, and it's fast. You click on an app don't click you will miss it open.
3) Speakers
Not bad not great. Sounds average. Plenty of volume but not HI-FI.
4)Screen
BEAUTIFUL. I came from a 15.6 FHD HP Envy. I honestly thought the smaller screen would bug me. Not one damn bit. The clarity, the colors, contrast... all awesome. I always judge a screen by watching 3 things. Golf. The grass best look real. Yup it does. Terminator 2, Chrome of the T1000 and Arnolds black leather jacket. Got to see it and the clean reflections, and texture of the leather. Yup good. Then Schindler's List black and white tell you a lot.... Looks great. Apple makes awesome screens and calibrates them perfect...
5) Keyboard, Best Apple has made ever hands down. Pun intended.
6) Overheating... NONE. It simply stays cool.
Over all I say get the 8/512 if you are not rendering and doing intense work.. if so skip the MBA and get a 16 gig MBP or wait for the new ones. Am I saying there is no place for a 16 gig MBA no. IT is the perfect College computer. It will be 100% bullet proof for 4 or if you are Tommy Boy 12 years of college. You will have enough power, and enough ram to study, listen to music, and watch a movie while doing keg stands. and a computer that may last long enough into your early real adult life to get you by.
I love my MBA. It's perfect for me.