Good luck with that. I have an older Solis-branded Maestro Plus that serves as my non-espresso grinder. It's great for drip/french press, but doesn't grind sufficiently evenly for espresso.
I'll echo Darren72's comments here. $125 for an espresso grinder isn't going to go far unless you're thinking of a manual grinder. The
Hario Skerton (Sweet Maria's link) for $40 is probably your cheapest option, and the Zazzenhaus grinders at $80 are certainly capable.
One of the criticisms of the Maestro Plus is that the space between the settings is too wide; it's like being able to measure only in feet, not inches. If you're going to stay with the Maestro Plus, you may consider removing the little ball bearing that acts as a mechanism for "stepping" the grind setting - the lower collar has notches set into it, and the ball bearing rests on a spring that pushes it into the lower collar. Removing this bearing makes it a "step-less" grinder.
If you read on coffeegeek or home-barista, you'll find a common sentiment that the grinder is more important than the machine. I share this sentiment, and would strongly encourage you to reconsider your price point, but can certainly appreciate the desire to stay within budget.
Then again, you stated that you're already enjoying shots from the Silvia with your current grinder, so all of my opining may be quite moot
If your husband "just got back from Italy", it might be helpful to understand where in Italy he visited - a coffee bar in Trieste may produce a markedly different cup than a cafe in Rome or one in Bari. It might be analogous to saying "I just got back from China, and now I love Chinese food"; local variation can weigh very heavily here based on everything from bean selection to preferred roast level.
The Rancilio Silvia has a well-earned (in my opinion) reputation for being capable but finicky. It isn't particularly tolerant of preparation error, but with good technique and a capable grinder, it can produce pretty decent shots. The Rancilio Rocky, often paired with the Silvia, is capable, as are the Le'Lit PL-53 or the Cunil Tranquilo. Unfortunately, these are all well above your stated price point.
Good luck with your espresso adventures, and please post about your experiences with the Maestro Plus. I'm really curious to hear other people's opinions about this match (Silvia + Maestro+).
"Hi, my name is Sherman and I fell down the espresso rabbit-hole."
-s.