edna713 wrote:Skip the HX, and go direct to double boiler
I owned a great HX and HATED it.
but just my opinion,
peace to all.
e
"Dual boiler," when used in the exceptionally broad manner above, is just another buzz word. We're starting to see more and more dual boiler machines around ... does anyone seriously think that the kitchenaid machine would be any good? Why not buy two gaggias and put them side-by-side? Dual boiler, but in two different machines. Will either of these perform anywhere near as well as a synesso or a hotrodded marzocco? No. I've only used a few domestic dual-boiler machines. Some were OK, I thought that one of them delivered far less clarity of flavour than a HX that I had used not too long ago. I haven't used any that blew me away, but, like I said, I haven't used very many at all. All that I want to point out is that it's not necessarily true to say DB>HX.
Similarly, all HXs are not created equal. There are a myriad of different factors at play; thermosyphon restrictors, flow restrictors, hx inlet length, boiler size, basket, water distribution ... Unfortunately, I think that it's more or less impossible to judge how these things perform just from a statistics page on the internet alone, which will not mention most of these factors. I'm not going to name the machines, because people seem to get irritated when I don't like their toys, but to give you a brief rundown of some of my (brief) prosumer HX experiences:
Machine A: 100mL cooling flush, espresso went from dark to blonde relatively quickly. Massive steam power, pretty good steam tip.
Machine B: 10mL cooling flush (just to clean the screen), picture-perfect pour. Steam OK for 6oz cappuccini, but not very abundant. Stock steam tip sucked.
Machine C: 300mL cooling flush (!), 10 seconds to first drops, regardless of grind; espresso started off very dark, then finished an OK colour. Heaps of steam, but, again, stock tip sucked.
Three different machines, nothing too different about them on paper, but Machine B leads the pack by a mile, IMHO.
Chris Tacy's bricoletta review is also worth reading on this sort of point. He noted that with both the water filtration unit and the flojet installed he got shots with great clarity of flavour, but with only one of them his results were a lot muddier. How the heck-a-roo can you tell that from a page full of statistics or a generalisation? Jim Schulman's current review of the Elektra Semiautomatica also does a very good job of pointing out subtleties.
Just to further illustrate the point, my local roastery has a stock, non-pidded, linea sitting opposite a HX that they have had built to their specifications. When the HX had 0.8mm flow restrictors, it was performing way better than the linea - tiny flush and the extraction was thicker and smoother, whilst still getting those origin characteristics into the cup. Now it has 0.6mms in it and I'm not such a fan.
So I guess that my big tip to people who are considering upgrading from a silvia is
don't generalise - try all the options, if at all possible! Now, of course I understand that very few people are going to actually be able to try all of the machines that they might possibly buy, but that's not a reason to make sweeping generalisations.
Cheers,
Luca