Estimate to install went smoothly. Good communication from office, installers were polite and efficient, a clean job.
We went with Megacity as we felt they quoted equipment we needed, rather than a more expensive model. As a concrete example, several other quotes included a more expensive 10GPM unit, overkill for our 2 bathroom-home. Megacity suggested a 7.5GPM model would suit our needs, and it has.
Megacity is a York dealer, we didn't have any strong attachments to the name vs. other higher-end brands. The quote was competitive, we received quotes around the same price point for both higher end (Lennox) and budget (Goodman, Amana) brands.
Minus one point for having to chase after some manufacturer rebates that they failed to bring to our attention (we found out about them from another installer on a DIY forum), but overall a good experience.