Actually for electronics stuff like TV, there is no need to buy and hold. The price is dropping every day. And there are bargain every now and then, and there is an IT show coming next week (more bargains).
If you check the hardware zone forum, there are offers everywhere. Recently there is one just ended, 42" Panasonic PV8 (plasma) cost only $1149 and come with $600 ntuc voucher. effectively the price is only $549. It shows how cheap the TV can go.
Not meant to spoil your mood, just to share with everyone
Anyway you have bought, just enjoy it.