Andy, welcome to HB . . . hope you don't mind a few incoherent, random comments . . . .
Londonplug wrote: . . . the Elektra is a work of art . . (h)as excellent revues on here the only drawback for me is the 6 ltr boiler and one and a quarter hours warm up time for maybe only a couple of drinks, But if that is what is necessary to produce the real thing then i would live with that.
The Elektra A3/T1 doesn't need 75 minutes of warmup time before you can pull a shot; it needs an hour or so to become thermally stable. That is two very different things. I have my T1 on a timer that is set to switch the machine ON at 5:00 am. I get up somewhere between 5:30 and 6:00, and pull my first shot as soon as I walk into the kitchen. It is wonderful! Once it's thermally stable, you can pull shots back-to-back-to-back . . . but it's up to temperature in as little as 30 minutes.
Londonplug wrote:The Alex Duetto II although not as stunning visually as the Elektra seems to tick all the right boxes, with some temp control probably practical enough for my wife to use, it would seem to be quit (sic) a new machine can it deliver the real thing in the Cup Alot of boxes ticked for a quite low price Has something been compromised
Keep in mind that I do not own one, so take the following with a grain of salt. I think the short answer is "no." Nothing of import has been compromised, and this is the only machine of the three that is easily converted back-and-forth between plumbed-in and pourover. Some have said the fit and finish of the Izzo Alex Duetto II isn't quite as good as the Elektra, but I've never heard anyone say that the build quality is lacking.
Londonplug wrote:The La Spaziale Vivaldi II seems to be very highly rated and recommended on these forums even though the espresso quality was lower than the Elektra in the review Excuse my ignorance but Does the 53mm portafilter present any problems as everything else now seems to be 58mm?
Let me ask you a question: why do you think La Spaziale would use a 53mm portafilter? Or rather, do you think they would deliberately select an inferior size that
has to be more expensive. (This is a presumption on my part, but if 58mm is the "standard," wouldn't you expect a certain "economy of scale" to result in 58mm parts being less expensive?) In other words, the designers of the Vivaldi felt the 53mm size was beneficial, or they would not have used it. Deeper, more narrow puck versus a wider, more shallow puck . . . both produce excellent results.
Londonplug wrote:And\can these machines be within reason DIY repaired . . .
Depends upon how handy you are at DIY to begin with. It's not "machine specific."
Londonplug wrote:Can these Prosumer Machines actually Compete with the Drinks produced by the big commercial machines(?)
I'm tempted to say that the Elektra A3/T1 is really a commercial machine, rather than prosumer, as clearly are the other two. Or rather, the Elektra is truly the only one that straddles the commercial/prosumer line. Be that as it may, ultimately, Andy, the quality of the drink, is up to you. But you'll not find any shortcomings in any of these machines . . .
HOWEVER, what are you doing for a grinder???
At this level, the quality of your grinder is
crucial! You don't mention what grinder you have now, nor what you are considering. Suffice it to say, for the moment, that were you to use an inadequate grinder (or worse, pre-ground), all you'll get in the cup is crap -- regardless of what machine you use.
Cheers,
Jason