I think I can safely say this is ideal for espresso because of the infinite adjustment (cant see why you would need multiple adjustments for other types of coffee drinking) and totally not ideal if you want to regularly use this for more than one coffee drinking purpose. Even dialling in Decaf is a realy pain because, as I have learnt the hard way, decaf beans require a significantly finer grind than non-decaf beans.
In terms of speed, it seems to be of similar speed to the Sunbeam, though funnily, different beans seem to affect the speed of the grind. In particular, currently using PNG Peaberry and it is significantly slower than most of the other beans I have used so far (Di Bartolis house blend, Campos Superior, some Kenyan SO beans). Didnt take note of actual timings, but it was certainly noticeable.
In terms of other things, this grinder suffers from some static issues, especially after a clean. For a little while, grinds spray around (maybe for around 15-20 secs) but it settles down. It suffers fairly badly from clumping and grounds getting clogged up in the chute. It needs to be cleared after use or you will get stale grounds in your next shot - I do this by either manually diggin it out with some modified wire or just pushing out the grounds with grounds from the next grind (which is quite wasteful, but easier than digging around).
Illustration of clogging:
I recommend using the Weiss Distribution Technique (WDT - http://www.home-barista.com/weiss-di...que-steps.html) if the clumping bothers you enough (it bothers me and I can see the effects of the clumping/poor distribution when I use my naked pf)
Last issue: on closer examination, the plastic chute has evidence of plastic faults (no idea how to describe this with correct technnical lingo). at the place where the plastic chute joins the body of the grinder, you can see it is cloudy, like it is cracked, though it isnt. Also in use, the plastic pf holder feels like it will eventually break. Otherwise, I am very pleased with the construction of the grinder. Nothing creaks and rattles or gives, although these may be hard to tell when the grinder is on because it sure is loud!
Why I Chose the IC over the RR and EM
Reason 1: I was on a budget - I could afford the EM and IC, and could have strecthed to get the RR, but preferred not to.
Reason 2: I am an espresso only drinker and I am a perfectionist. I look forward to the challenge of getting everything the way I want it. Stepless is a feature I desired quite highly and the IC has it, the other two doesnt.
Reason 3: I wanted to make sure the grinder would last up to at least 10 years and hopefully longer. I have no confidence that the EM would, very confident that the RR would and am quite confident that the IC would as well!
I bought this for around $270. The EM could have been got for about $170 and the RR for about $400.
I feel that this is the best value-for-money grinder in the low-end for espresso only drinkers. Packaging is fairly appalling, but, at least for me, it did not damage my grinder. Fit and finish is above average for the class, but clearly not high end and not with the attention for detail and quality of materials of the high end grinders. Use and performance requires some effort, but produces great and repeatable results.
As a match to the Silvia, I couldnt ask for more at this stage!