Get one, No Don't, Yes Do, Oh my head hurts..
Many of the points I’m about to make just serve to reinforce what other have said, and some is new information, but..
Discovery’s are great trucks, if you get a good one, nightmares if you don’t. I’ve literally talked to dozens of owners over the years, with 100, 150, even 200 thousand miles on their Discovery and think it is the best thing ever, and had very few issues. But I have also talked to an equal number that have had 30, 40, 50,60, etc. thousand miles on their trucks and think they are the biggest, most unreliable hunks of crap on the planet.
Most of the prominent Discovery I issues will not strand you, at least not without significant warning. Though there are some (like the tendency to burn up fuel pumps, and or fuel pump contacts will without warning). There are a lot of ‘problem areas’ that are quite costly to rectify though (significantly more than the value of the trucks these days), like the carbon build up on the valves (top end rebuild) and the spline wear issue on the input shaft, input gear of the transmission/transfer case (really expensive to fix with the manuals, fairly bad with the autos).
I got hooked on Land Rovers when I bought my Defender 90, and eventually had to have a Discovery as an everyday driver. I bought a ’96 back in 2000 when they were still pretty pricey trucks (mid to upper teens). I searched for a long time because I wanted a manual transmission (available ’94 thru ’97, but they imported pretty limited numbers of them) and found a low mileage (30K) truck in pristine condition, and brought it home. The first year was pretty uneventful (though the fuel pump did go out), but close to the end of year two the spline wear issue got me (at about 61K miles). It required a new (or completely rebuilt) transmission, and a new input gear in the transfer case (minimum, though I was worried about damage to the bearings from all the metal shavings living in the oil for god knows how long so I replaced it as well). I bit the bullet and figured I’d be good with the new cross drilled input gear (suppose to rectify the spline wear issue). Unfortunately the shop who did the install damaged the rear oil seal, causing a slow leak, and lack of lubrication meant I ended up with the same issue again, now at 77K miles.
I was so attached I almost spent the money on it again, but the wife made it clear that if I did she was leaving (she was right, I was being too emotional about it), so it went for a steal to someone willing to sink the money into it. So be warned, there are several possible issues, and once you own it, it will likely get under your skin. You may end up bleeding Green, not just Land Rover Green, but cash Green as well.. But who am I to talk, if my wife didn’t keep me on track, I probably would have bought another Disco for daily driver duty..