Staining using same brand of stain
I have a deck that is about 5 years old. I let it weather the first year then I stained it using Armstrong Clark's Transparent Cedar Tone the following summer. 3rd year I cleaned & brightened & re-stained using the same Armstrong Clark Transparent Cedar tone. I live near Toronto and my deck is full sun so I really only get one season out of this tone, so I want to go darker. I really like Armstrong Clark's product so I want to go with a darker stain they make.
My question is, if I stay with the same brand do I just need to do a cleaning again or do I need to strip as well?
Considering I used a transparent stain originally, and due to the deck being full sun it only really lasted a season before having to re-stain, would you recommend going to a semi-transparent or a semi-solid? I'd like to re-stain the deck every 2 summers instead of once a year.