RO Systems Info Needed

Hi all, this thread is to find out if anybody in Australia or other parts of the world have any relevant information regarding Reverse Osmosis systems out there on the market, particularly the ones i will be listing below and also brand recommendations would be greatly appreciated.
I have been looking on eBay for affordable ones and I've got a couple of different brands.
The most affordable ones seem to be cheaply made chinese ones, staying clear of those as there will be little repair help and parts for spares etc.
Has anybody purchased anything from these brands -
WATERMARK
SHIELD
or have anybody got any other systems that they recommend for under $300AU
I need to know that the system i buy will produce ph stable water, not claim to clean the water but produce ph 8 or something.
Wouldn't like to spend more than $250
I only need to produce 100Litres ph stable water per week. So anything over 100GPD is overkill.
Thanks guys

whatever you decide to buy, check the price to do a complete filter change.

rkymtnman said:

whatever you decide to buy, check the price to do a complete filter change.

Click to expand...

Yeah I am going to check, I am farely sure most of these cheap systems come from specific vendors on eBay, and you can generally buy the necessary filters from the same vendors. Ill provide some links below, an educated guess would be good.