I use Montane Featherlite, I have both the smock and jacket. New they are shower proof but if you wash and reproof with a wash in re-proofer regularly they get better, my smock withstood a thunderstorm for 45 minutes before I got a small leak or two and I was still relatively dry after an hour and a quarter.
For solid rain I have a good Goretex jacket which I bought 4 years ago for £110. It was an end of line sale and the RRP was £250 so I got a bargain. The longest period I've worn it was 8 hours of January rain with no leaks.
The problem with asking for a recommendation is related to how individuals feel about getting wet. I seize up if I get cold so prefer to be a bit sweaty under a waterproof rather than allowing the rain to get through. Others prefer to be cool even at the cost of some rain getting through their outer layer.