Depends what you want to spend.
couple points-
*The cheaper rubber or rubberized stuff will make you sweat, even in colder weather and the build up of perspiration will chill you to the bone. Spend a little $ and start at the intermediate level. The "weather resistant" stuff. Much of this is simply a "treated" material (3m scotchguard, etc) that needs upkeep and maintenance.
*The next level is the gore-tex and gore-tex knock offs. Well worth the extra money if you spend a considerable amount of time on the water or active in foul weather.
*It's not just for rain!!
-We fish at night a lot. Seats and boat are often wet even though it didn't rain. Makes for a much more comfortable trip to have a dry backside!
-Washing the car or power washing the house/ boat, etc
-Shoveling snow, skiing, sledding, etc
*Fit is important. I like "fitted" garments so I use all North Face gear. This is the upper end of the gore-tex stuff. The difference between the $150 and $300 stuff is largely in the design and cut. HOWEVER,....fit is not a priority for many. Much of the stuff sold thru "Fishing" venues isn't designed so much for fit as for protection. There is some mid level stuff (Cabela's guidewear, BPS 100mph and pro qualifier, etc) that are very well received by the angling community. Doubled seams, doubled "high wear" areas, etc, all a lot of bang for the buck.
*Some other places to research rain gear are outlets for Sailing, Skiing, Golf and Mountaineering
*"Shell" outfits are most popular overall. Buy slightly larger so you can layer underneath accordingly. This is one of the drawbacks with the guidewear, 100 mph, etc level. Much of the stuff is not designed to be worn in "warm" rain. Shells are where it's at in my opinion. I own both shells and insulated stuff and wear the shells 75% of the time.
*
