I used to share the same thought as you. In the end, I bought F-Tuned HLSH. Had I gone for just Hi/Lo, it would be approximately RM500 cheaper. Question is .. prior to handing over your money, do you know exactly what your personal sweet settings are?
After making the purchase, do I regret not getting the cheaper option? Initially, maybe I did. First time I adjust here/there, I thought I was done with it and these are my final settings. Later I realized that over time (actually not that long la), my preferences had changed. I have grown more tolerant of stiffer settings. So, do I regret now? Answer would be 'No'.
No matter how skilled the tuner may be at re-valving the shocks, ultimately it's your butt that determines whether it suits ya. Trouble is .. how sensitive is your butt and how soon does it convey the confirmed results to you? If like me, it was some time before I thought I might liked harder settings, you may have to make repeat trips back to the shop to have it adjusted. Bear in mind that those trips will likely take up too much of your precious time.