PH Tester

Can anyone suggest a good brand/model digital PH tester?

I dropped mine in the reservoir and its been in there for a few days.. so its about time to get a new one.

Start with ebay

Thats exactly where I was going to start, but I just was wondering if anyone had experience with a specific brand or product they would recommend so I had something to price shop.

I was also looking @ tri-meters but even the good deals are pricy - http://www.amazon.com/Nutradip-Tri-Meter-PPM-PH-TEMP/dp/B0012BMEVY/ref=sr_1_38?ie=UTF8&m=A1E4P5BRTCVVUF&s=generic&qid=1311037895&sr=1-38

3 days later and I saw the ph meter floating so I grabbed it, dried it, and it didnt work. I ended up going with an EcoTestrPH1 as a replacement