Tesco Ireland - Which Variant

[luv2skipow]

Looking for a phone for my wife for a visit to Ireland and have 2 Tesco sims on the way.

Which variant of the 520 would work on Tesco...the RM-915 (Telus) or the RM-917 (T-Mobile)
Nokia Lumia 520 - Full phone specifications

This stuff confuses the hell out of me.

 

[Raver Rain]

Lumia 520 will work. 521 is cdma type it will only work for tmobile

 

[luv2skipow]

Lumia 520 will work. 521 is cdma type it will only work for tmobile

T-Mobile is GSM and they are the 520 RM-917 variant (521???)
Telus is the RM-915 and seems to be missing some bands.

I basically want the world phone version or GSM version of the 520 for use in Europe specifically the Republic of Ireland.
I am concerned about the missing bands on the Telus version which is the one I am faced with buying.