If you like your Connecta then you will probably like a Wompat. Most SSCs are quite structured with a stiff waistband, but the Wompat has a lovely soft squishy mouldable waistband and feels similar to the Connecta, but more supportive. I tried several different toddler carriers before settling on the Wompat. The chest strap slides on the shoulder straps which is handy, and the buckles are dual-adjustable. My 4 year old also fits in it (although he's now too tall for the hood) so it will last a nice long time thanks to the seat darts. Mine has petite straps, but I really didn't need them as the straps cinch down well.
(Sorry for the weird photo of my bum, it seems to be the only photo I have that shows the stripes.)
Mine is the old toddler size, they changed the sizing brackets just after I ordered. When we first got it, it was too tall in the body for her and she got frustrated that it restricted her shoulders and neck. At 23 months it's now just starting to fit nicely (but still with heaps of growing space). Personally I would go with the medium, there's no difference in width but it's slightly shorter in the body.
Baby size (4/6-18 months, clothing size (EU) 68/74-86): Height 38 cm, width 38 cm
Medium size (1-3 years, clothing size 86-92): height 40 cm, width 45, between the legs 35-40 cm
Toddler size (2-4 years, clothing size 92-98): height 45 cm, width 45 cm
Pre-school size (3-5 years, sizes 98-104/110): height 50 cm, width 50 cm
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