Yeah I do find that there is a difference in weed smoked from a joint and from a blunt. With the blunt you are also smoking some tobacco, if you smoke tobacco already this may not be a big issue, but I don't like how it makes the bud taste at all. Joints are a lot cleaner, but nothing beats the taste of bud smoked out of a glass pipe. Now with strengths, I cannot say. There are too many factors involved in growing quality cannabis and too many strains with their own different potentcies. Midgrade could be anything really, but it usually has seeds which makes me think that it is a grower's sinsemillia crop gone bad. If you are worried about how strong it is, just start out slow. Smoke a little bit, and wait like 10-15 minutes, if you want to get higher, then smoke more. Some cannabis does have a tolerance limit, where you can reach a peak high, others don't and you can smoke until you are as high as you want.