It depends.
When I first put RSView Studio 4.0 (both ME and SE) on this machine I had no trouble whatsoever. Editing programs was a bit of a challenge at first, but I did okay. Then we had so many problems with SE distributed that we got some RA experts in here and they highly recommended upgrading to 5.0, and offered us a deal to upgrade which we did.
Installing 5.0 on my machine was a nightmare. I finally got 5.1 to install, and spent another week straightening out my .net framework stuff and my Autocad server based license.
My counterpart had none of those issues, although he did have some minor issues when he upgraded his machine to 5.0 It only took him about 6 hours to get the install and the bug fixing done.
As far as hardware and capability, I find th G3 superior. As far as software and PC hassles...Crimson 3.0 installs in seconds, and I have only seen it crash twice (in rapid succession likely due to a mistake in a program on my part), and both times it recovered all but the last few steps of my work automatically when I restarted it.
You'd have to look at the cost of FTView Studio ME, the cost of the physical changeover, the cost of a G3, adding a new part to stock for a spare (if you don't already use the G3).
One thing that I like best about the G3 is the boot time. We have forming machines that get locked out at least 6 or 8 times a day for minor setup changes. Some have PV standards and others have PV+, and the PV+ boot time is 90 seconds to 2 minutes. The OEM even went so far as to add a battery to keep the PV+ alive during short power outages, but to no avail, because once comms are lost, they might take 10 minutes to recover! My G3 boots and is rocking along in 7 seconds. I can unplug the comm cable, and it shows it right away, I plug the comm cable back in, and within a couple seconds, it's talking again. I've done this with ethernet and serial connections. I have been asking for permission to put a G3 on the forming machines, but the SLC code in them is OEM locked...One day when I am all caught up (never) I may write a new program from scratch...
If you're already using G3s, then that might be the best path.
If you urgently need to make a simple change to a PV+, that might be the best.
Some folks claim to love the PV+ and have no trouble with Studio so don't let me scare you out of it...I am definitely biased by my many bad experiences.