Another vote for 5 Vegas Gold, also try Rocky Patel Connecticut - both very smooth and creamy.
Now if you REALLY want SWEET, try the Drew Estate Natural Clean Robusto, or the Legends Copper by Drew Estate, (available from CI). Both of these are well made, creamy and very sweet throughout.
If you're interested in sweet tipped cigars, try Baccaratt or Prof Sila. Though they are not as well made as the previously mentioned they have sweet tips and are good for the price.