I haven't found a home machine yet that can produce the consistency of a commercial machine. On a 1 to 10 scale (10 being the best) I rate even the best home machines between a 6 and 8. Then again what do you consider a home machine?
My personal opinion is anything less then $1500 is a home machine, this only applies to traditional machines. After $1500 you start to get in to low-end 1 group commercial machines.
To be honest with you I didn't see much of a difference between a Pasquini Livia 90 and Rancilio Silvia in the terms of espresso quality. Neither one could stand up to producing multiple drinks in a row without 1st letting the temperature rebound. Granted the Livia is much faster then the Silvia, it still doesn't cut it if you have a small gathering of people.
But if you’re just producing espresso for yourself then either or would be suffice. Granted the Pasquini would be a lot fancier, the Silvia is a lot cheaper.
Any thing less the $400 in my opinion, is usually made of plastic and the life expectancy is maybe a few years at best. Most home espresso machines are thrown away after they die. There are a few brands out there that only the factory can service, like Capresso. Capresso charges a flat fee, which is based on the machine type. This isn’t a bad concept unless you know for a fact that what ever broke only costs a few dollars to fix and you’ll end up paying a small fortune.
One other thing, most commercial and some higher end home espresso machines have a maintenance cycle. Unlike their low-end counterparts there are a few parts that are expected to be replaced biannually. This is just the cost of operating commercial equipment.
I have noticed a lot of people tend to forget this and complain due to the somewhat high maintenance costs. Commercial equipment also needs to be babied. Water filtration, water softening, and regular maintenance is a must! This too seems to cause headaches for a lot people.