I played at MGM Springfield yesterday, and it was definitely an experience.
The 1-2NL has 100-500 buyin and the 2-5 is 300-1,000. With the buyins being bigger than the CT games, they definitely played bigger. Rake for the 1-2 is 10% capped at 5, I forgot to check the 2-5. Free drinks until 4am will probably get some splashy play late night. I recognized most of the dealers from the other New England casinos, so they were all pretty good.
Speaker was too loud, and the bright red felt didn't seem ideal, but overall I liked it.