“Sweet” is a bit subjective. Sweet as in Swisher Sweet or just in the sweeter end of premium cigars?
If the latter, for non-Cubans it is hard to go wrong with anything from Padron. Their construction is great and their taste profile is pretty middle of the road but always good. They make pretty much all sizes and you can spend anywhere from $5/stick for their base line up to $50 for their Anniversary series.
Arturo Fuente is similar in that it is hard to wrong with anything from them.
If you want sweet as in swisher take a look at the Acid line. They make high quality flavored stuff.
If you are inclined to look for Cubans, Montecristo #2 are reliable. H Upmann Coronas are awesome. The best Cuban stuff tends to run smaller than Churchill size though.
I’m not a big cigar smoker but my father is, so I have smoked many when hanging out with him.
