Ankar:
Most all wp/b jackets out there rely on a layer of polyurethane to keep out the rain — which severely compromises breathability. The only three exceptions — garments that manage to retain rainproofness without a PU layer and thus allowing your perspiration to vent out directly through the fabric are:
1. eVent — currently the best option available in terms of max. breathability. Integral Designs (and others) utilize this technology. Google around or do a search within the forum.
2. MontBell — look for their jackets that feature "Breeze Dry Tec" specifically — such as the Peak Shell jacket suggested above.
3. Driducks (and equivalent) — cheapest option by far but extremely breathable. Not the coolest styling nor the most durable — although mine has lasted me for a few years now because I do trail hikes and not bushwhacking. Per your description above, I think Driducks will be durable enough for you.
With your $150 budget, I highly recommend choosing either of the first two options above. Don't waste money on something cheaper but inferior in breathability since you already have something similar that you dislike.