best performance/price chart nas 4 bay

[nxh]

is there somewhere that has a benchmark of all recent 4bay NAS that shows the relationship between MB/s and price of each NAS. Sorta in the same type of reviews found on tomshardware?
i mainly just want to use the nas for streaming hd content without any stuttering or lag found on some NAS.

thanks!

 

[teknojnky]

readynas nvx business edition diskless for 750

http://www.newegg.com/Product/Product.aspx?Item=N82E16822122058&Tpk=RNDX4000