Linksys E 1000 V2 which firmware do I use???

Ok heres the deal I want to use a open firmware for the router above I came across two different files with no discription of which to use the files listed are tomato-E1000v2-v21-NVRAM32K-1.28.RT-N5x-MIPSR2-123-Mini.bin or tomato-E1000v2-v21-NVRAM32K-1.28.RT-N5x-MIPSR2-123-MiniIPv6.bin the files are from tomato by shibby dont wanna brick my device also wanted to know the differences of the two and if there is any better firmware to use please send me the link if possible. Also is Tomato by Shibby english based firmware? I havent flash a router for years with custom firmware sorry if question is newbish :) Thanks in advance!!!