So I tried to order test prints from a few of these services for a 30 x 90 cm poster via their online services (no downloaded/installed software), and can offer a few comments:
in partnership with http://www.medion.com/ch/
Pleasantly surprised with quality of the print (better of the 2 prints I ordered) but was frustrated with the limited options for a panorama poster. ALDI will only print on paper, not a framed or otherwise reinforced wide format.
But they do offer "leinwand" options for basic formats and the print quality should again be good.
Price, including shipping was not bad <CHF 15, but the way they reveal the actual full cost is annoying .... doubling the price with an unreasonable CHF 7 shipping fee late in the ordering process. Overall a low price, to be certain, but left me with a really unnecessary sense of deceit ... trying to hide some of the true cost of the print in the exceptionally high shipping cost, in order to headline with a ridiculously low advertised cost-per-print.
I'd be a happier customer seeing a realistically low cost-per-print around CHF 12 without the shipping surprise.
Online service/app: Java app that is quite rough around the edges. I was really frustrated with their inefficient, online java app. Easy to get lost, difficult to get back to photos you've already loaded to their site, so lots of repetitive re-loading of the same photo, steps in the process that didn't load correctly or consistently in the app (such as cropping the image to fit the available dimensions). I could manage in the end, but quite frustrating.
Nice options all around, including the above postershop which offers (too?) many options for panorama prints and posters. The prices even for prints is quite a bit higher than for ALDI, but the shipping fee was less than ALDI's. Overall nearly CHF 40, so nearly 3 x the ALDI price, and the print quality was worse.
Print quality was OK, prices are quite high, but if you really need a panorama print for wall hanging, Fujifilm can deliver.
Online service/app: straightforward, without the ALDI comparison, it might have seemed rough around the edges, but by comparison it was polished and easy to use.
Could not find a panorama format print option in Dec-2012, so did not order a print from iFolor.