if your cdrom drive has some sort of advanced jitter correction mechanism like plextor cdroms (for example) then it doesn't really matter what grabsoft you use as long as it can extract data digitally
when choosing a ripping program you want to avoid using those that don't have any sort of "secure" extract modes because then your rips will end up with sync errors, which takes the whole listening enjoyment away
same thing applies to what encoder you choose, what bitrate to encode at, what stereo mode, etc. for example, using too low of a bitrate can bring on dreadful "watery" artifacts while using joint stereo on live recordings or songs where there is a lot of stereo seperation can add a lot of flange
in short, the eac/lame combo will give very good results most of the time (especially at higher bitrates or vbr), or you could use eac to rip (to make sure the extracted audio is clean) and audioactive or opticom producer pro to encode
links:
eac:
www.exactaudiocopy.de
lame:
www.mp3-tech.org
fhg:
www.opticom.de