I have had good luck with block tech sets/brand but 5 below had $3.25 sets at the door entry. I bought 3 different sets for making a stained glass window as there were 3 crystal sets. (They had plant sets but I don't really get into plant sets.). Of the 3 sets I bought, The pink blocks were not as vivid as advertised on the box. The blue pieces were fair enough to be used for stained glass but their shapes were irregular with little studs to connect. The purple pieces were dark rich color...the best in my opinion with enough studs and shapes to make them the easiest to combine.
So in summary I'd recommend the purple set for color and edges compatible due to stud placement. The pink and blue sets just don't seem to have depth of color. Due to the finished model, there are just very generic bricks. Don't get me wrong...I like block tech sets overall but I don't think these are very helpful to obtain translucent bricks.