As a kid I used a non-offset paddle (it was paddle you could disconnect, so that was easy enough) and then switched to 90 degrees. Having picked up some paddles two years ago that can be attached with variable angles I found something less than 90 degrees to be more comfortable. My kids and wife all prefer the 90 degrees. I guess it comes down to personal preferences. I never did real long distance sea kayaking so, mostly lakes and rivers and some easy white water when i was a lot younger.