If you want something easy for your wife, I think that the Expobar Office will be a horrible choice. If you're not paying much attention, temperature control on an HX machine will be haphazard at best; most likely a horrifying disaster. Also, I should warn you that a lot of home machines, even in the $1000-1500 range, will have a difficult time steaming 8-10 oz. of milk. It will take a long time, I think. I sure can't stand steaming much more than 8 oz. on my Vetrano. If you're making a pair of drinks, it could take quite awhile, not to mention that proper steaming is at least a bit challenging to learn, and requires concentration throughout the process. If you want good drinks, the Expobar Office is going to be a long way from easy.
If you want to be a home barista, there's a choice you have to make: Convenience or high-quality drinks? Getting both, unfortunately, is rather expensive. I am going to assume you will want a healthy compromise.
If I might suggest something slightly over budget, I think in your shoes I would get the
QuickMill Alexia and the
QuickMill Steamer. I must confess I have no firsthand experience with either machine, so let me point you to the Alexia's
detailed review on this site; I would recommend that as a good read. Dan also
demoed the auto steamer here. I think the auto steamer might be a convenient way for you to get very reasonably steamed milk without doing any work, which sounds like it would help your wife.
Buying a separate steaming device means that you don't have to buy a HX machine (more work) or double boiler (way out of your price range) machine to get no-wait steaming. You can buy any single-boiler espresso machine you want (they range from ~$300-$1500). This will help you a lot, because it will simplify temperature management without breaking the bank.
Finally, and most importantly, really don't skimp on the grinder or the coffee you buy. The Le'Lit PL53 is probably the cheapest thing you should consider, and you will find nice steps up from that in terms of quietness and ease of use, if you are willing to pay more. If you aren't planning getting a good grinder and using <2 week old coffee roasted by a micro roaster of the caliber of the sites advertised here (PT's, Intelligentsia, Counter Culture, Klatch, etc.), I would not bother with anything beyond the cheapest $300 espresso machine you can find--With bad coffee or a bad grinder, chances are you won't be able to tell any improvement from a cheaper machine to an expensive one like Alexia.
Beware! If you stick with this long enough to learn to make yourself excellent espresso, you may find yourself hopelessly addicted to making the perfect cup. It's
not a cheap endeavor.
