Not entirely sure where to post this question so apologies if it's in the wrong place.
A friend wishes to have internet (currently on BT Infinity) and add 4G with failover and possibly load balancing between the two for his small business. However we are uncertain as to what the most suitable hardware choices might be. Currently it's a Draytek Vigor 2860 and gets about 50-60Mb/s.
Options seem to be:
1) Specialised 4G Router with WAN capability such as a ProRoute H900,
2) A Draytek Vigor 2927lac,
3) Hang a USB 4G modem off the existing router but that seems a bit messy and may have limitations.
Are there other/better options? We are not sure if the Vigor will do load balancing between the VDSL and 4G. The ProRoute will (I think) but their website is appalingly bad and it's not 100% clear from the H900 manual (also appallingly bad).
We'd also have to put a VDSL Modem in: choices seem to be limited - either a Vigor 166 or a Netgear DM200. Are there other options?
Does anyone have experience doing this? I realise that l may not be asking all the right questions but any advice would be much appreciated.