Hi,
First of all I'm going to 'fess up. I am a director of TollTag.ie but I'll keep this straight down the middle and in a personal capacity. We get, I kid you not thousands of emails on the subject and a lot of the same issues pop up repeatedly
second of all check out [broken link removed] this is a little known (as yet) NRA operated site to compare tags and tag providers. One caveat, it has been a few weeks since we updated our info on that site and our site (and I presume the others listed on tagcompare) will probably have more current info but at least it lays out the entire field and saves a lot of googling.
I see from the posts a lot of traffic regarding monthly fee's etc, again tagcompare will shed some light there and whatever supplier interests you, check their actual site for updates but not all tags have monthly fees, similarly minimum topups/balances etc vary
On the question of swapping tags between cars. Unfortunately it is a no-no, not because tag suppliers want to shift tags (we do as it happens) but because the M50 has two systems as you know, video and transponder, the system needs to know has it just read one car or two, the plate helps correlate that info. Technically its a little more involved than that and the road owner is best placed to spell that out but thats the upshot..my advise, don't do it and regardless of the tekky side we have been instructed by the road owner not to permit it. If that ever changes we'll certainly tell you
One other thing of note is that e-trip has acquired easypass in the last week or so meaning there is effectively one less choice of provider assuming they harmonise their operations at some point.
I hope i havent simply added to the 'noise' and perhaps given some of you a route to find out who is out there and what they offer. Sure, tags are not for all, neither is video payment, and when you figure out which of those two suits best then for video there is only one show in town, for tags, several
Tks /P