Hi!
We have the Mitsubishi Electric Starmex system, because we've read reviews and basically Mitsubishi Electric seems to be the best model for aircons in Singapore (from families, from renotalk, from our contractor, from the Gain City people etc). My maiden home has had the Starmex system for a long while too. So far, we've been living with it for about 2 months and no regrets so far, quiet, cooling, can be easily tweaked (for coolness etc). Also, easier to maintain because many other people have it too so parts and expertise is easy to find. For us, we ended up with a 3(?) ticks system. The ticks is only for the compressor, not for the fancoil units btw, and for the BTU we needed (system-3) and the brand we wanted, only the 3ticks version was available.
One thing to think about is calculate the supposed utility bill savings? Often the stores will write what is the approximate monthly electrical bill for the 2 ticks versus the 5 ticks, then you multiply that by per year and figure out whether the extra $700 is worth it. For aircon, esp if you are going to be using it every day and every night, the utility bill savings might add up to quite a lot. We did the same comparison for when we bought our fridge (also paid around $1500 more for a 5 tick versus a 3 tick) and figured that the bill savings more than outweigh the extra price over time.
For hob, if you're getting gas, do note that if you also have a fan in the kitchen, that you need to get one where the fire doesn't get affected by the fan. I don't have a fan in the kitchen but I can rig up one to blow in from the kitchen door, but when I do that, even though the fire from the hob looks the same, my pans don't get hot, so now when I'm actually cooking I have to switch the fan off. Of course if you have induction then that's a different issue. I also chose glass surface because it's easy to maintain. Got a Rinnai cos I like Japanese brands. I also have a Fujioh hood but to be perfectly honest we haven't really tested it out fully with deep frying yet, so I really don't know whether it's that much stronger than other hood brands haha.