My experience is that Dell sells the computer of the week. If you need a new part a year out, you're SOL. When I bought them on a corporate level, we had to pay extra for a standard design, so that we could have a uniform inventory.

Dell seems very much targeted on big accounts. When I was in fedgov we had to write-up excuses NOT to buy a Dell. But Dell offered a good array of different configurations and our geek department was familiar with them. I bought several killer workstations for GIS and image processing. Had to prove I needed Panasonic Toughbooks for field work.

Iirc Lenovo used to be IBM. For me, that’s a psychological plus. Dunno if it means anything 30-odd years later. People online like Lenovo price/performance.

Lenovo made IBM's laptops and workstations at least since the mid-late 1990s, possibly earlier. The machines that gave IBM the reputation for toughness and reliability were all Lenovo beneath the skin. When IBM divested their consumer division, Lenovo bought the rights to the Thinkpad and Thinkcentre lines and kept right on building them. The "Thinkpad/Centre" models produced by Lenovo today are very much the descendants of the IBM's you remember (which were actually Lenovos).

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Current stable:
1995 E320 157K (Nancy)
1983 500SL 125K (SLoL)

Gone but not forgotten:
1986 300SDL (RIP)
1991 350SD
1991 560SEL
1990 560SEL
1986 500SEL Euro (Rusted to nothing at 47K!)

Gone and wanting to forget:
1985 524TD 167K (TotalDumpster™) [Definitely NOT a Benz]