What do you want to spend?
http://www.baxleycompanies.com/Sportchock.html
I used Baxley, and it was the best thing ever. Lugs to make them removable and if you call the company, tell them you want "Seconds", and you get a chock that's got some sort of cosmetic flaw, for $35 less then a new one, but all the warranties.
I never saw what the flaw was on mine....
A small note about Baxley:
Don't swear on the phone with them either. The company is religious, and even sends you Christian religious materials (just a pamphlet) with your chock. Hell....for $35 off...they can send last weeks trash, and I'll deal with it.

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HERD meber #10
DISCLAIMER: Any information, advice or child raising tips I give on this forum should be taken with a grain of salt, 8 hours sleep and at least 6 beers.
Following my instructions will likely lead to death, mental retardation and/or bodily injury, consistant with eating lead-based paint chips, and by doing so, will release me, my family and my dog from any legal action(s) for listening to anything I recommended.