First of all, thanks to Joshua and John for very well informed, succinct responses. To the original poster's question:
dmorgan wrote:My Solis has been, and still is, a darn good machine that extracts a lovely, creamy rich espresso with great crema. I'm game to step up but don't really know what to buy. No price constraints. I just can't have a machine that takes an advance degree in engineering to figure out!
If you've already mastered the Solis, you will find nearly any the espresso machines reviewed on this site to be easier to use with more consistent results. In addition to Keith's recommendation, I'll offer my boilerplate answer and homework assignment lifted from
Seeking advice about an espresso machine purchase:
HB wrote:I know you've been slogging through a lot of reading, but if you want make an informed decision, I recommend you soldier on. To make your reading assignment less burdensome, I'll pick what I think cover the spectrum of choices and offer a soundbite for each:
Vibiemme Domobar Super - big steamer, easier temperature control among HX espresso machines, solid construction; deeper footprint than most in its class.
Elektra Microcasa Semiautomatica - showpiece design and construction, demands eclectic usage, and yet easy to manage temperature control; an absolute dream steamer.
Quickmill Vetrano - plumbed in rotary model similar to the Andreja Premium; super quiet, requires attention to temperature control (unless you install Eric's E61 thermometer adapter), solid steamer.
Expobar Brewtus III - no-brainer temperature control, slower steaming than most E61 HX espresso machines; materials and workmanship are mid-grade.
La Spaziale Vivaldi II - has garnered many admirers for its no-brainer temperature control; quiet rotary pump and solid construction, powerful and easy steaming. It's wide, but shallower than most home espresso machines.
Ponte Vecchio Lusso - among the contenders that deserves consideration as an easy to master espresso machine for home baristas. Compact and simple design bodes well for years of reliable service.
Reading the reviews will certainly give you a good idea of what features/performance to expect for a given pricepoint.
After you've read the above reviews (or just the conclusions), read Mark's buying guide, and given them a bit of thought, I recommend starting a new thread with a restatement of your requirements and preferences.