Another vote for Good Life Vapor! My favorites are Deadly Sin, Peanut Butter Sin, Mr Churro, Pie Gobbler and The Revolution. ElKamino, Nana's Nuts, Decadence, Spook Sauce, and many others also get great reviews.
Another great place to buy a sampler is The Plume Room.
Sample Packs- Premium eLiquid from The Plume Room | The Plume Room
They also sell small 5ML bottles for $3.99 so you can try any flavor you like.
My favorites there are Peanut Butter Creme Pie, Banana Pudding, CinnaDrizzle Coffee Cake, Angel Sauce, and Cafe AuLait. You really can't go wrong here, especially with the Spin Fuel Award Winners, flavors are exactly as described and they are a great company. Every Monday night they do a flavor of the week where a 30ML bottle is only $10.50. The code "ECF2015" will get you 10% off your first order.
Good luck finding what you love - sample packs are a great way to try before you buy a large bottle.