If you like to constantly fix stuff and buy replacements, then go with a spinner, if you like to complain a little about stuff then get a retriever. I for one like to complain a little so I shoot with retrievers. I have 5 retriever reels now, and only one has ever quit on me, but it was 12 years old and litterally fell apart in my hands. Replace the line every couple of years and their fine.
The pawn shop (as mentioned) is a good place to buy a bow, so are yard sales. I switched this year to bowfishing specific bow (browning barracuda) and love it, its cranked as heavy as it will go at 40lbs.
One more thing, don't buy your stuff from the big name stores, ie...GM, BPS. THere are bowfishing stores out there that will be are a lot cheaper and have better selections. So much cheaper in fact, that you will still save money even after paying the shipping.