Hi BrainBody,
I've also learnt the first Shibashi set, and am currently practicing SFQ.
First off, I'd say Shibashi is wonderful - there's no doubt it has a terrific effect on people.
However, I'd also say that SFQ is in a different league. Perhaps its because of the way it is taught and LS's expertise in putting together a program. But, I think it may genuinely also be the case that Master Lin has put together something much more powerful - at least in terms of simplicity and power.
I guess if you compare Shibashi to level 1 SFQ that's a fair comparison - as the focus is on healing yourself. However, I'd say that the possibilities that SFQ offers for healing others seem much more realistic and achievable than through other Qigong styles.
If you enjoy Shibashi though, I'd keep with it - if it's giving you good benefits why stop! On the other hand, I love SFQ and the amazing sense of peace I have after practicing it - I have never experienced anything like it through any other form of practice.
Hope that helps