It all depends on what you want, things to consider are
- what road manners are you wanting/prepared to accept?
-how much money do you want to spend?
- how much work you want to put in yourself?
- how tall do you want to go?
-what size tyres you want to fit?
For me, I'm not a big off-roader, I wanted a small lift that would let my Suzuki look bigger, let me fit conservatively sized bigger tyres, be a bolt on solution (so I could return it to standard if I wished) and not adversely handle the ride.
In the end, I ended up buying a calmini 3.5" bolt on kit, it's a great kit, but wasn't cheap, I paired it to some 235/75r15 tyres which are small as 'big' tyres go.
Other common lift options are
-shackle lift, really common but ruins castor angle on your front axle and gives you 'fangs' that can get stuck
-virtual lift, body work is cut away to allow wheels to fit in wheel wells (not a lift but allows bigger tyres to be fitted)
-spoa, SPring Over Axle axles are removed and new perches are welded on to give around 6" lift, this is a big lift for cheap but can damage springs if you don't fit an anti-tramp bar
-uprated/lift springs, basically leaf springs with a deeper curve, can bought in sizes +1.5" +3" but can Give a harsh ride
Other things to consider regarding lifts are
-D shackles, missing links or 'revolver' shackles, all types of shackle that can open up to allow more articulation, but can compromise road holding
-Shackle reversal, sometimes used on the front axle to move the location of the shackles in board,
-coil conversions, not really suitable on a road car unless you want to take it through an IVA test,
Bear in mind if you are lifting it to put bigger tyres on you will probably have to alter the gear ratio to accommodate the bigger rubber