Moto G series are great.
The main mic on my second gen G LTE stopped working after 2 'n a half years of hassle free use. (hands free mic wuz still working)
Vodafone currently have the G4 Play @ only £79 as a locked/Paygo handset deal.
You do have to buy a £10 Vodafone Paygo SIM to qualify on their site. But this does still give you a rather decent spec handset for only £89, you may be able to flip the SIM fer a fiver. Cheapest price otherwise for this handset unlocked tends to be £135/£140'ish mostly.
I used this unlocking service on eBay for the second time. >>
Only £1-79 to furnish me with t' unlock code & they messaged me this inside 25mins of making the payment. (Make sure to request they message/email this to you, rather than their 1st class post method)
Really nice in use. Quite svelte having a 5" screen, yet still usefully larger than my old G's 4.5". 16GB built in storage + micro SD slot fer expansion. Totally smooth & none laggy in use, big improvement over my old un. Other highlights, are a fairly high capacity battery, nearly half again the capacity of my older G. Corning Gorilla glass screen, which is always summat I try 'n spec for smartphones/tablets, soo no screen protector needed. The battery is also user replaceable which wasn't the case for my second gen G LTE.
It is also shed loads better for tethering/creating a WiFi hotspot than the older model. The WiFi zone is considerably larger/more robust than my old G. Making for placing the handset easier & less temperamental.
If you need to order two handsets at once, you may be able to save a tenner by only stumping fer one prepay SIM? Worth trying in any case.
I'm also on 3, currently getting unlimited/all you can eat texts, calls, internet + Data allowance with a 30 Gig tethering allowance on top for only £19 per month.
All the current G4 gen of handsets, take a micro SIM. The latest G5 models take a nano SIM. Bear this in mind if you are already running a nano SIM, as you may need to order a replacement SIM, depending on which handset you end up with.