Oh. BIG difference. Just demo every racquet you can. the 100S is alright but would be too light for you if your switching from a 340+ gram racquet, you would need to add extra lead like i do.
btw tezuka how do you get BB in Australia.
Before you change racquets. Change your strings. You know if your using Lux you needa change strings around every 2 weeks even if there are syn gut in the crosses, assuming since you say "bored" and now you say "wierd" the touch and feel changed from being good to bad, therefore the "bored" since no one really like old used up strings. Now after you say it's wierd, assuming that you say its wierd now and your "bored of it", it means that you liked it before some time ago then it got "boring" since the poly died. The strings will be the problem to your touch and feel.
Quite the detective I know.