Depends what you want in fish size. If your after huge fish a place like Wollaston is bar none the best choice for huge pike, but you won't be the only ones in camp and it will cost!! If your looking for quiet, good fishing, reasonable and nice time many lakes or camps would fit the bill. These offer limited facilities but quiet, decent fish in numbers, the price is an indicator to the quality(AKA how big) the fish are. To go in the middle a place like Cree Lake - Crystal Lodge will be about half the cost of Wollaston, has excellent laker fishing, very good pike and walleye fishing at fly outs (grayling is marginal with only one place to find this small sailed fish in this lake). You will not be the only party on the lake but less than Wolly(BTW at Wollaston to get the really good fishing you need to fly out as well, where you will be most likely the only group fishing at that time but will still be in a main lodge with several other guests-this is an extra cost to your baseline fare!!).
I have fished many areas in Saskatchewan, for best value with good quality fish Cree Lake is my choice. To just get away many in the Thompson Camp region north of laronge would be ok, fishing up in these parts is really good for walleye, smaller pike and some lakes offer smaller lakers in good numbers. Top notch would be a Selwyn or Wollaston both in facilities and quality.
You can checkout
www.soa.ca for a list of Saskatchewan Outfitters(those who have websites should have links). Also
www.fishingbug.com has some of the moderately priced camps in sask.