For me Ultra 2 plus Blood Sugar + Blood Pressure monitor would seal the deal but won’t rush it to own it since I already bought Ultra 2 recently (about 6 months back). Otherwise, my Apple Watch is perfect for me, bought several Titanium Straps from eBay and online sources which are really looking great. Ultra construction looks very solid with Titanium frame and Safire glass. I could attend calls, send SMS, voice memos. I think too much beyond that will probably kill its already fantastic battery life (my Galaxy Watch 6 Classic could not come near in terms of battery life)