I’ve given up on the one pair to do it all. Like you say, just fall apart. Been through many 661’s myself.
I use these when its a bit nippy or wet,
http://www.sealskinz.com/UK/gloves/dragoneye-glove
Been brilliant so far but I wouldn’t wear them in the summer. Having dry hands makes for a much better ride this time of year.
I usually get a few pairs of 661s end of season when CRC discount them to a tenner or less. I’ve always found they only seem to last a year before they start to rub but then they are pretty cheap and the material is thin. Worth thinking about if you ever see them discounted. Not like they have use by dates!
I have had Fox gloves in the past, didn’t get on so well because the velcro strap kept coming undone after a while.