Gettin some Hids for my saph .. Any Recommendations as ive heard some arent the best ..

Ive got a 1990 rs sierra 4x4 -- and whats the thing about a bulb or double bulbs?

 

They are H4 needed for the main part of the light.
These come in two different types that is H4-3 and H4-4, the H4-3 are hid dip ONLY, they use a normal H1 bulb attached to the holder for main beam.
The H4-4 are hid on dip and main beam, there are again two main types of these, one has a fitting/arclight(bulb)that moves around forwards or rear wards to suit main beam or dip.
The other sort is much better, but usually more expensive and has TWO points of light, so puts on whichever one is selected on dip or main beam.
The next thing to consider is the colour of the light emitted, this is determined by the temperature at which the arc/bulb runs at, most oe stuff is around the 5000K mark, the most light output however, all else being equal is at 4300K, 6000K start looking blue, 8000K is into purple territory.
There is a lot of talk about it not being legal, or being a mot fail, illegal yes, yes fail defo not, there is NOTHING in the mot testers handbook that states where or waht source the light has to be from, so a super bright candle if bright enough will pass, so longa s dip and main beam worked!!
I had HID dip and main on a astra mk3, but removed and went back to the PHILIPS EXTREME H4 as vastly superior, hid work much better on projector lights, as made more accurately, as hid will increase light output they will also increase any stray light, plenty produced from sierra headlights, as good they are not pattern wise.
I use H4 extreme in mine with H1 130 on the inners and front fogs, which also come on with mb, and the dip is wired to stray on even on mb.
A element that does come into it is the colour of the light, if the tester considers it is not white he can fail it, even "E" marked lights have been failed, most famously on the bmw mini's rear lights, replacement e marked ones.
tabetha

 

I bought a 5000k but not fitted them yet.

 

www.ultimatecarparts.co.uk mate all the way and they are not the cheap sets you can get