I have heard people complain that the biggest issue with the iPod Classic 5.5 gen with Rockbox was that it was very slow and that the battery life was bad (this being the iPod's fault, not Rockbox). I was wondering if I performed the mod on the iPod where I removed the hard drive and replaced it with an SD card would improve the performance and battery life with Rockbox installed? I don't want to have to wait a few seconds (or possibly more) to skip from track-to-track or album-to-album and I would like to have a battery that lasts as long as possible.
My other option would be to just get an iPod Classic 7th generation and Rockbox it, because I heard that the speed and battery life of that model is greatly improved. Should I just go that route anyway and still do the SD card for hard drive swap on the iPod 7th generation, or would the iPod Classic 5.5 gen greatly improve in performance with the mod I suggested?
Thanks in advance for any and all help given!