Okay,my personal,first-hand use observations of the two :
Cialis-Hits faster than Viagra,and seems to induce erections at will for about a day and a half after I take a full tablet.Kind of gives you those frequent"teenage boners"you use to get when coming into puberty.Just your clothing rubbing against your dick is enough to get that sucker sprung.It also seems to increase blood flow to the corpus convernosum even in the abscence of erection,as my dick seems to be much fuller round the clock for about a day or so after taking it.
Viagra-Takes longer to kick in,and has a MUCH shorter duration.Effect usually last 4-6 hours for me.Viagra for me personally gives the best hard-on I have ever had.My dick gets longer and thicker than it ever has on 1 tab.It completely ENGORGES my dick with blood.This however,must be brought on by some sort of stimulation,either touch or visual.With Cialis,your dick will get hard just for the hell of it,lol.I also get a tinge of blue vision for about the first hour after I take a 100mg tab of V,but it seemas to dissipate after a few.
Both drugs are remarkable,and I will continue to run them both in the future,as they really are a lot of fun...