From what I have read here, a blend unit is best. When I called texaselectrolysissystems.com, they kept telling us that we shouldn't need a blend.
You do not need blend. A manual thermolysis machine and training, training, training, training of Your skills will do fine. You can even go down relatively safe to timings down to 0.5 secs with such a simple device. A few colleges here in Germany are really good in such treatments.
Of course the more expensive machines will make Your life easier. Great in all their modalities are for example the Instantron machines. I know and like the Elite Spectrum and personally would prefer it over any Apilus in that price range (i.e, over all 13 MHz Apilus machines). But the Pure with Synchro and the larger Apilus boxes are still better, albeit more expensive.
All of the more expensive machines do also provide blend. On the Apilusses i personally dislike the blend modes. Too limited.
BTW: i do not see any Gender specific difference in these machines. It is mostly about skills.
The advantages of the more more expensive machines over an entry level device are fully independent from Gender.
Finally: You should use good probes. My preference in ascending order: Ballet Gold, Laurier tapered, Laurier IBP. The latter only for fast resp. flash thermolysis.