I have gone through around 150ml of Liqua, and I have to say, I didn't really enjoy it.
To just show how subjective this subject is; two here said Tiramisu and coffee were their favorites of Liqua. They were the two I disliked the most! The Tiramisu was too sweet, like eating cake all day, and as for the coffee, all I can say is, try having a cup of tea whilst Vaping coffee
As has been said, Liqua does taste what it is supposed to taste like, but for me, the flavor was too strong, and not in a good way.
Now a little more experienced with other brands, my disliking Liqua may have been that the VG% was too high. I was new to Vaping at the time and only using an Ego/CE4 combination, so it burned like crazy. Higher/better Vapers may give a different experience with Liqua. I just don't care too much to spend the money to find out.
If others here like it, I would say, give it a go.