From reading your profile, it looks like this is your first pump. If you think that you'll be wearing your pump under your clothes, the remote will be valuable to you. It'll also save you some number inputting when you use the meter remote to measure your blood sugar. It takes the reading and uses it to calculate a correction bolus, for instance.
I stopped using the meter remote for the Ping since I didn't get along with the scroll speed, causing me to over-scroll and under-scroll. I've read about others that have become used to this and it doesn't bother them. Another member, Zoe, really likes the meter remote feature.
I don't like the idea of the Vibe pump body being the Dexcom receiver. My biggest problem with it is that I do not dependably hear my pump alarms now when I'm sleeping. It seems other people have no problem with this. I keep my Dex receiver at night where it can give me full-throated alarms.
Since you already have the Dex receiver, you could choose to run both the Vibe as a receiver as well as your current receiver. Then you'd have the best of both worlds.
The recent Dexcom G4 505 firmware update only applies to the stand-alone Dex receiver. That software update has improved the accuracy of the stand-alone receiver. The Vibe cannot utilize that update, so its accuracy will lag the stand-alone receiver. I would be put off from making a four-year commitment to a rig that was already technologically dated right out of the box.
The Ping has been a very dependable system for me, Customer service has been responsive. The Ping and Vibe use standard leur-lock connectors connectors so that makes many different styles of infusion sets available to you.
Both the Ping and Vibe are hard to read in the bright sunshine, a defect that I feel should have been corrected ages ago. The Ping will not populate the dose field once it is calculated but the Vibe will. This saves a lot of up-scrolling to get to your dose.
Using the Vibe pump body as your CGM receiver gives you both a pump and CGM receiver that is water-proof, something the Dex stand-alone receiver is not.
I see you're new to diabetes this year. I love using an insulin pump to control my BGs. It can be a lot of work and learning in the beginning but once you refine your skills, it is a tremendous tool. It can provide a lot of flexibility with your lifestyle. But remember, you are the one that needs to make it work well. It is just a dumb tool!
I recommend reading Think Like a Pancreas by Scheiner and Using Insulin by Walsh. Most doctors and even diabetes educators do not have the time, persistence, or chops to fine tune your program. They can get you started but honing in on your customized settings is often left up to the user. I hope that's not true in your case but it often is.
You'll need to learn how to change your protocol anyways since diabetes is a dynamic disease; once you settle on some great settings, your needs will change. It's part of the deal. Plan on it. Good luck!