Britpart Gaz kits - I've heard some good reports but no personal experience although I have fitted standard Britpart cheese suspension to other cars. . . a full kit is the same price as one OME shocker. . . poor quality shocks and soft springs but the Gaz kit should be better (that's not saying much
).
Terrafirma are rubbish. I bought a kit when they first came out just to try them out and I was suspicious about the quality due to them being relatively cheap. They were returned to Allmakes within 2 months via my local supplier. 2 shockers were knackered, 2 were tired, the springs had sagged. Poor quality welds were showing signs of corrosion. The shocks also had no internal damping so every time they topped out you got a boot up the ar$e. They did a 3 day trip in Wales and just general road/farm/towing use (not abused). Allmakes refused to give me a refund.
Unless you want to lift it I would fit Genuine parts springs and some decent shocks (Delphi DeCarbon/Monroe etc).
Personally I only fit OME now, although my trials 80" has Rough Country shocks which have put up with quite a bit of abuse for 2/3 years and David @ Llama4x4 gives excellent service so that might be worth a look?