Several vendors have sample packs Halo is one. Alice in vapeland, problem is most don't let YOU pick the samples you want. They have pre made packs. I love Halo juice. But never ordered a sample pack because several of the flavors in it are tobacco based. And I'm moving away from tobacco juices.
I will add this though. Vaperite does let you pick a free sample of any of their flavors for every bottle of juice you buy. So order 2 bottles....get two free samples. You know.
Now taste is so subjective I hate recommending flavors. I will say I like their coffee flavors, and I like their bananas foster and their blueberry pancake. But that's me.
I probably should add that some of their juices require quite a bit of steeping depending on when the batch was made. In my experience anyway.
something you might try also. If you order a juice and don't like it, take the cap off and let it steep awhile. It may come around. Always worth a shot. Although .....sometimes no amount of steeping helps a bad juice.