I can't provide a comparison to the MAK, but can comment on SAR-1 vs. WASR-10 high-caps. The SAR is designed to accept high-cap mags, but the WASR is not. Some WASRs are single-stack only, while others have had their mag well enlarged, by Century, I presume, to accept high-caps. So the first thing is to make sure you're getting a high-cap model, if that's what you want and you're buying a WASR.
A minority of people report that the expanded mag wells in the high-cap WASRs causes excessive side-to-side mag wobble. It doesn't seem to be a common problem, but common sense suggests it may happen occasionally. Otherwise, I think there is virtually no difference between the SAR and the WASR. Actually, there were reports, more common a year or two ago, that the WASRs tended to have better furniture and accuracy than the SARs.
I ordered an SAR a couple years ago, and the dealer mistakenly got me a high-cap WASR. There was a little trigger slap (easily fixed), but overall I've been delighted with it. Just a ton of fun. If I had it to do over again, I'd probably order an SAR, but I think the difference between the two models is practically nil.