I ' ve never used the Hercules personally but I ' ve watched a bunch of reviews and also spoke to several people who have experience with it . It ' s not that it is bad , it ' s just very high maintenance . I can ' t speak for how efficient it is with concentrates but I highly doubt it is a noticeable difference from the Saionara . I have had the Sai for about a week now and I love it . It ' s so easy to use . I opened it up and within a few minutes it was in action . I keep a close watch on my concentrates because where I live it ' s not readily available and when I do stock up on some , the price is higher than elsewhere in the country . But I never feel like I ' m wasting anything egregious . Also the Sai comes with three different coil types so it is really flexible . You can use the miracle A and B coils if you just want to chill alone and take some nice , tasty rips . Or you can put the wax coil in if you ' re in a group setting and want some bigger rips . All are just as easy to use . And they are pretty simple to clean and maintain . I know with the Herc , taking it apart to maintain is a huge hassle and there are dozens of little parts to keep track of . I ' ve also had the Omicron V 4 for a while so I can compare it to that . I like the Omicron a lot as well but the Sai is definitely a nice step up from there . Either is a good option but if you already have a box mod you might as well just grab the Sai for $ 40 versus spending double on an Omi .