Hi Napulitano,
First, welcome to the forums--lots of good, friendly people here with tons of info.
A very subjective question, so be sure, but here are a few you might want to consider:
Burley: Solani Aged Burley Flake, MacBaren Golden Blend, Carter Hall
English: Nightcap, Early Morning Pipe, GLP Quiet Nights
Aro: Rattray's Bagpipers Dream or MacBaren Vanilla Flake (both not fruity--mostly light toppings)
"Crossover English" (mix of English and Aromatic)--all Frog Mortons, MacBaren Plumcake, Sillem's Black
Virginia: Dunhill Flake, SG Full VA Flake, SG Best Brown Flake, Orlik Golden Sliced
Virginia//Perique (also called "VAPer"--Escudo or Dunhill Deluxe Navy Rolls, PS Luxury Bullseye Flake
You can go to http://www.tobaccoreviews.com/search and click on "Blend Type" and then sort them by number of reviews or average rating to find others that people like.
Finally, smokingpipes lists their top sellers in a number of ways:
Top 10 Tinned: https://www.smokingpipes.com/tobacco/tinned/bestsellers.cfm
Top 10 Bulk: https://www.smokingpipes.com/tobacco/bulk/bestsellers.cfm
Top 10 Trending bulk: http://www.smokingpipes.com/smokingpipesblog/single.cfm/post/top-trending-bulk-tobaccos
Top 10 English: http://www.smokingpipes.com/smokingpipesblog/single.cfm/post/top-best-selling-english-blends
Top 11 Burley: http://www.smokingpipes.com/smokingpipesblog/single.cfm/post/top-best-selling-burley-tobaccos
Top 11 Aromatics: http://www.smokingpipes.com/smokingpipesblog/single.cfm/post/top-best-selling-aromatic-tobaccos
Top 100 Tinned: https://www.smokingpipes.com/tobacco/tinned/bestsellers100.cfm
Also, check out this thread for Top 5 "must try" tobaccos:
http://pipesmagazine.com/forums/topic/top-5-must-try-pipe-tobaccos
Enjoy!!!