At $.35 per MB, the data rate on the link you gave looks a bit expensive.
Which rate do you mean is better? The voice rate (local or roaming?), the text rate, the data rate (local or roaming?).
If you get my drift, European SIMs are complicated to evaluate and compare when you really begin drilling into the details. And there are about 12 variables to getting a SIM, plus the variables of your own usage needs.
Sorry to not give a "quick fix" answer but anyone who makes it look really simple probably hasn't dealt with the subject very deeply.
Some companies offering SIMs lean more toward voice/texting and the data seems an expensive addition to their service.
Define what countries you will be traveling in, for how long, how many devices you will use, whether you expect to use mostly voice, voice and text, voice and text and data. If you really want data at good rates then in my experience, that changes the attractiveness of various companies offering SIMs for Europe.
Nano SIMs are more common, but some of the European discount phone services don't offer them yet. Another factor that limits your options.
Anyway, after puzzling it over for days, looking at numerous companies, I just settled for lefrenchmobile because it was easy to understand and use their web site and services and their rates weren't bad, not the cheapest, but not bad either. Plus they support roaming into other countries at reduced rates. English telephone support, no expiration of plans, etc. I was mostly based in France, though. It's not always about the rates, but also flexibility and ease of use.