Is this PPM wand good? Will it last for a while and is good quality?

Nutrient Truncheon Wand EC/PPM/CF Meter Hydroponic NR! - (eBay item 320198890446 end time Dec-24-07 07:09:48 PST)

Also which PH meters are better?

Oakton Ultra Basic pH Tester - (eBay item 200147232604 end time Dec-27-07 11:39:22 PST)

NEW Milwaukee PH51 PH Tester - (eBay item 330199243401 end time Dec-26-07 11:56:07 PST)

What would you buy?? I'm thinking hte milwaukee cuase its cheap...What you think?
GrowMe Reviewed by GrowMe on . Opie Yutts I need your help friend "Ah, aeroponics. Wise choice. Not exactly for beginners, but it should be no problem if you have a couple smarts. Done correctly, this set up is one of the highest yielders. Let me clarify what I meant about little water. In my opinion the best way to superfast growth and healthy plants is to supply the roots with as much oxygen as possible. This means that no matter what your setup, soil, soilless, hydro or whatever, you do not want your roots sitting in water. MJ is not a marsh or pond Rating: 5