Before & After Weight Loss Page

I want to add a before & after weight-loss page to my Wordpress website menu. I will also need to be able to simply add/delete new photos & text when required. The photo must be normal shape (not round) and be larger than thumbnail size, but I do NOT want the function to click on it and its expands in size! Perhaps a testimonials plugin will be good for this, what do you recommend? Please send price and link to recommended plug-ins. This plug-in used must work perfectly with everything on my website currently, it must not conflict or clash with anything (a previous developer here on PPH didn't understand that). Sensible quotes please, this is only a simple plug-in needed. Immediate start, quick finish wanted!