Sorry I have been slow to respond. Thanks for everyones input.
reefcrazy, I have never heard of that unit but it sounds like it is working well, so I will look into it
waverz, Typhoon III is at the top of my list currently, but its not cheap
cabenn, The only difference I see is sometimes the ebay units break, once that happens and you buy a replacement you might as well have spent the 200.
atticus, I will make sure whatever I buy I will get the correct membrane. I knew the housewater pressure rating but didn't know filmtec was the brand I was looking for. Thanks
Are there any units people have purchased and would *not* buy again?