Okay, if you could run ANY ECM on your ride, which would you choose? Looking for possible replacement of my MAST electronics. Money is no issue, and of course I’d need a custom harness as well.
Assuming I ditch my MAST electronics, which at this point is a possibility, due to a wideband issue, I’d love to know which way to go. The MAST stuff runs my gauge controls, has a simple to use software program, and is very high quality, so if I swap, I’d like something similar. GM has made a gazillion ecm’s, so tell me what’s the best in that line, if you suggest GM. Does GM offer a wideband setup?
Let me know what’s out there guys...

434” RED sleeved block with Mamo 265 LS7 heads. Mamo ported MSD intake, solid roller 254/268. T56 manual, with stage 2 kit. Made 616 last week, with faulty wideband circuit (not the sensor)

Analog gauges, driven from the M90 ECM.
I love the MAST setup, but if we can’t get this wideband figured out soon, I’m done. Been screwing around with issues since January, and I’m ready to put my ECM issues to bed.

Yes. Talked to Damon today, and I’m sending him the ECM.
I will keep you guys posted on this. Thanks for the responses.

I prefer megasquirt because it's flexibility, options and community support. Open source software and hardware. And of course price.
Haltec is another good option, but up there on the price range.
I stay away from microtec.

Thanks again for the suggestions guys. I should know by the weekend which direction I’m going with this.