CD ripper


I have a sizable CD collection that I would like to make DSD files from. 
Looking for a decent ripper. 
I have a pair of really old Bevridge System 3 speakers that badly need restoring so my current listening setup is:

Fostex HP A8C and Fostex TH900 headphones. About to order LS50s.  Not sure if I want to go passive or powered.

Is it necessary to spend much on a high end ripper?  Trying to figure out a budget.

Thanks!
hleeid
I use db Poweramp and rip to uncompressed FLAC. FLAC is lossless but by ripping to uncompressed files the CPU will have a lighter workload when the files are played. Maybe that will affect the sound, maybe it won't but I have about 4,000 CDs to rip and I do not want to do this twice. I also built an external drive using a Plextor CD/DVD drive (Plextor PX-891SAF 24X SATA DVD/RW) plus a nice external case. This drive rips much faster than the internal drive in my ASUS ROG laptop - like 2 or 3 times faster. I don't know how the speed would compare to a dedicated ripper.
As far as CPU processing affecting quality of a FLAC, I am writing my own iOS & Windows Players and sitting hear watching Task Manager right now. CPU usage for my FLAC player is peaking at 0.6%.
+2 for dbpoweramp, from the guys who made the "accurate rip database possible". Better than EAC imho in everything and offer much more than simple ripping. Yes, you need to pay money and is not free as EAC.
Is it possible to convert mp3 to flac or any other cd quality files, if yes what program to use???