You will likely have the same issue with the Sapphire and LE version so I wouldn't use that in your reasoning when making the purchasing decision.
I am a bit hesitant to buy the Saffire LE as supposedly the FFADO support is not fully completed yet. So I wasn't sure if there were any issues or not with the LE. Otherwise if there were still issues with FFADO, then I would opt for the original Saffire, which seems to be supported with both.
I myself struggled with this dilemma myself. For $50 it might be nice to have the Sapphire (standard version) but as I live in rip off Britain the difference is 50 pounds sterling which is significantly more.
The only thing is that while the Saffire does have 192khz capability, I do prefer the 4 inputs of the the LE and I know the Saffire's DSP function will not work in Linux. Not to mention it is $50 more.