There's different kinds of sweet. Depends whether you like cherry sweet, almond sweet, vanilla, etc.
Personally I don't like vanilla in any guise. I like sour cherry blends like Exclusive BC, but find some of the sweet cherries too artificial, like sucking sweets. A better sweet one, to my palete is Borkam Riff Ruby.
You just have to experiment to find out what suits you. The trouble with sweetly cased aros is they tend to ghost a pipe, so when trying something different if you've only got the one pipe it pays to give it a good clean with alcohol between different blends.
Another to try is Petersons Killarney, which is a whisky sweet virginia and black cavendish, or Petersons Sunset Breeze, which is almond amaretto. I like both of those as they have a natural rather than artificial sweetness. Sunset Breeze is really nice actually, but you need to dedicate a pipe to it or everything will taste of biscuits soaked in Disaranno.
Don't know so much about Sutliff as I'm in the UK and it's only just started to appear on the market here.