Depends on what you're using it for but if you're just drinking it then the blends from Bulk Powders taste okay, have a variety of favours and are reasonable priced.
They're a blend of 5 vegan protein sources mainly comprising of pea and brown rice, closely mimic whey in terms of amino acid profile (that's why they're generally a blend to get a more complete amino acid spectrum) but with a little more carbohydrate and fat content. I haven't tried MyProtein's vegan but I would hazard a guess they use the same supplier anyway so will be very similar.
If you're using vegan protein for more than just shakes, e.g. adding to oats, then unfortunately you'll have to pay a little more as the one's from Bulk Powders etc have a terrible consistency when treated under heat. For some reason the name brands (PES, 1UP, Awesome Supps, etc) are much better, they probably have some thickeners added to them to prevent this.