Dyna 7 is alright. Here's a brief review on it
Speed: off-
Feeling: soft-medium
It plays well if you put hard rubbers on it. ie: MXP, MXS, Hurricane 3, Rasanter 50, etc.
The blocks are kind of hard. Counters are easy to pull along with drives. Loops you need really precise feeling. It's a good blade if you are wanting to learn how to counter.
Swat
Speed: Off-Off+
Feeling: Medium Hard
Swat is very good for driving, counters and push. I would recommend medium hard- soft rubbers for this blade. Putting on a hard rubber is very hard to control as it is slightly fast. If you are skilled enough go for it.
IMO: both are good, but the swat power beats them both. I have used both, but I keep coming back to Swat Power. If you have any questions feel free to ask me about Victas or TSP. I have used almost all of their equipment, except pips out.