HP Tuners -- Unlimited ECMs possible single VIN? Megasquirt instead?

[crakarjax]

I'm at the phase of my project where I'm looking at which programs to use to flash my ECM. Unfortunately the options seem really restrictive for the price. I'd like to be able to flash at least 2 ECMs, with one as a backup and to tinker with or to use for future builds. I'm wondering though, is it possible to do the following:

- Use 2 credits for a single VIN and then just flash all my ECMs to the same vin?
- Or, get a year/model license and flash ECMs to that year/model?

Given that I don't care what the actual VIN is, I figure someone on these boards would probably have thought of this before!

Another option I've considered now is Megasquirt. It looks like the hardware is pricey but you don't have to mess with licensing for the tunes. However, it seems like this would be more expensive if I go LS on future projects.