Well i got my first C310 a month ago and struggled a bit with getting started - mostly my fault.  Its easy really just follow the instructions to the letter. I got confused with setting up my local router Asus wr86 as Im not network savvy so a lot of sweat here but its all sweet now mostly my problems.  I used cheap used TP link 841n  £5 each from EB as range extenders - bargain really as I can get from house up garden and into garage. I use a Wifi strength app on my phone to check blind spots and signal strength - invaluable tool.

My first C310 was £32 Argos, 2 weeks later to reorder = sold out. Struggle to find a reputable seller on EB, got another one quickly from Pacetech  £35  . 2 weeks after sold out and and now its £50 = that hurts. but what can I do

Its weatherproof and still good value

I had bad experience from Hiccup viz  and Qviz gave me a shock

My only advice is to invest in local microsd cards = I get 64G for £5 Kingston  but beware of fake cards, lots about and they will often fail to register from new, so go for a good supplier with 100%FB

Happy camper