Yeah, some ePCRs are better than others...at my current and previous jobs, they are (slash-were) simply enough that for a simple BLS (transport, monitor vitals, chit chat w/patient) I can check everything off pretty much except for the narrative in a 5 min transport time, get that done too in a 10 min transport (or whilst holding the wall at the hospital) and usually all I need is signatures, and transfer vitals and I can have the thing done by the time my partner has finished doconning the rig and we're ready to roll.
Right before I left my first company they were rolling out a new ePCR (and I got to sit through the training for that a few weeks before I left) and that one just seemed so complicated having to hunt and pick through different tabs to find different applicable information...kind of a nightmare. (My previous employer's ePCR was a digital version of the pre-existing paper form, you tapped in a section and it would open a larger view to input all the necessary data, then tap and go back to the overall form view....it was rather very intuitive, especially for those who'd been there forever and used the paper forms since the beginning of time, the only transition issues they had were typing on the tablets touch screen keyboard lol. My current place is different, each section is a boxed area, but in one long scroll with quick link at the top to various sections as needed, more or less set up so you simply start at the top and work your way down, once you play with it once or twice it becomes pretty simple).
So basically if you are going to switch, don't just switch to the cheapest available, actually find one that works with how you've done your paper forms, it'll make transition and life after transition so much easier, play around with a few, trial a few different vendors at once and see which one just clicks before spending your money if at all possible.