i've had half a dozen 4x4's in the last few years, only two for under a grand;
i've had a sub 1k SJ, it was an excellent offroader, but terrible on it, noisy, small and impractical. it was however great fun to own and drive.
i replaced it with a swb pajero after doing my homework. I paid a little over the odds for mine, 130k, couple owners, some history, and all the toys for £950. i stuck some tyres on, lifted it 2" (£130) and although it's not as good offroad as the sj it will still go anywhere i want it to:
It's got aircon, e/w, e/m and will sit at 70 all day. plus it went through it's last mot no trouble the kit and build quality is excellent. IMO for a grand you'll struggle to get better than a swb pajero. leave the shoguns (more rust). bear in mind they're small, if you're 4 up there's little room for baggage.