You have opened pandora's box! I have spent many dry hours reading the impassioned debates about the best gear/configuration on this site, so based on that, and my personal experience here are the answers:
1. Best gear is the one that fits you, your diving style, and needs.
2. Price should not be your only consideration. I am assuming this because of the variety of brand names you are asking about suggests that you are looking at various packages based on price.
3. Consider buying the pricier items at an LDS. my local LDS will let me rent the same styles or regs to try out, and some LDS have their own pool where you can try the equipment before buying. Is it more expensive? Maybe. A lot of places will give you a discount, but expect to pay a bit more than the internet to get to touch it, try it and compare features hands-on. Some things look great on the web, but in your hands not so much.
4. You don't say where you are, so we don't know if you need regs that are good for cold water diving, or if you are a strict warm water diver.
Yes, I know I didn't specifically address the gear you posted. I kinda think that other people's opinion on gear should factor pretty low on your decision. I am a life long fan of scubapro regs, and trust them enough to pass them down to my two kids. Others on this thread while acknowledging that they are quality gear, won't buy them because they may have an issue with company policies. So, you would get two conflicting opinions, both valid but the tie can only be broken by you trying for yourself and then making your own decision. Try before you buy. Sorry for the windy post. Hopes this helps.