If you want something cheaper than GoreTex, then you might consider LL Bean's TEK2.5 fabric. They have both a jacket and pants in this waterproof breathable fabric. It is about 2/3 the price of their lower end GoreTex products. They also come in Tall sizes.

Trail Model Rain Jacket $89 for Tall sizes:
http://www.llbean.com/llb/shop/68624?feat=509723-CL1&page=trail-model-rain-jacket

See the link on the above page for the pants too ($79 in tall sizes).

One great thing about buying from LL Bean is that everything is guaranteed, period. They also provide free shipping out (and back if returning). They have great customer service too.

I carry an earlier version of this jacket in my Go Bag. I have been using it for about 10 years.

My great grandfather wore LL Bean boots while working as a lumberman in northern Maine.

yeah I'd thought about LLBean's gear as well, sadly, still too pricey for my budget. I've always heard good things about LLBean's stuff.

Keep in mind I need two sets, one for myself and one for DS. One of our assistant scoutmasters recommended this and it looks to be our best option for now.

I greatly appreciate all the input so far, and I am still weighing all my options so any other recommendations are welcomed.

That Coleman rain suit is nice, until you have to go potty. Not unlike a flight suit, you have to pretty much take it all off before going.