My current machine is an 8kg 1200 spin Samsung with digital display screen, delayed start function and a myriad of programmes that are all v useful incl 15 min quick wash and handwash etc. Its only annoying trait is that it plays what I assume is some sort of random Korean folk inspired tune when the wash is done . Has a 5 year warranty and cost about ยฃ350 about 6 months ago. So far so good.
My last machine was a bog standard 6kg 1200 spin Bosch which only lasted about 4 years, and which I was disappointed with as I thought it would last longer, hence why I went for a different brand, as per above, when it died.
Before the Bosch I had a ยฃ150 el-cheapo 5kg 1200 spin Candy machine that dealt with 2 x DCs baby and toddler years (inc washable nappies) plus a house move, and which, despite its hammering, lasted an excellent 8 years .
I would never bother with a machine faster than 1200rpm spin as a WM engineer advised me that the faster spinning models are more liable to break down, plus they are usually noisier, which is a consideration if your machine will not be tucked away in a futility room etc.
HTH