My wife has had 4 MX-5s and 2 of them had to be sold, due to mechanical issues (one was only 18 months old and kept cutting out on us for some unfathomable reason!)
The Evora has Toyota engine and gearbox, so it's extremely unlikely to let you down at the roadside. You may have small niggles, but that "L.O.T.U.S" thing is well out-of-date. In fact, I sold a 911 to get an Evora, on account of the 911's unreliability!
However, you're a long time dead and - as much as I do like the MX-5 (we've had NB and 3 NCs) - the Evora feels (and makes you feel) waaaaaaaay more special. I used to think the MX-5 was like a little flea, but the Lotus makes it feel quite saggy now, honestly. Everyone likes an MX-5, but everyone loves the Evora!
To look for: Good service schedule, all 3 packs (Premium, Sport and Tech) if possible, updates done to earlier cars (e.g. improved gear cables, sports exhaust, etc) and that's about it. Enthusiast owner is better, obviously, but - unlike Porsches - there don't seem to be some real money-pits waiting out there.