Cheapo Halfords ones. They do the job perfectly.
i have a us pro tools aluminium one, use it for rallying so it gets lots of use, low entry and high lift, can pick up one handed also.
about £125
you can get cheap copies for about £75 but my one of them fell apart! lol
Currently just a sealey 1.5 ton jack - need to get a low entry one though, need someone to lift the 9 a couple of mm before I can get this under the jacking points!
Only problem is, a decent low entry is looking around the 4-500 mark!!