Powertap - Train With A Power Meter
I have to admit that there are some products in the cycling world that I am not too knowledgeable about. Sure, I've been on most of the bicycle trainers on the market today and enjoy when I get a call to try out the latest trainer, but sometimes I think I'm cooped up inside too much. Things like that happen when you still ride your 25 year old aluminum Trek bicycle and ride a hybrid bike for fun.
Velocity of Rider
Power meters of the past had wired hookups and some still do. No one wants unnecessary wires going all over the bike and I recommend putting out the added expense if choose to add a power meter to your bike. If you are going to use a Powertap (cycling power meter), I like the following book.
Powertap Lets You Track Your Progress
The bottom line is that by having a power meter, you can more easily track your progress. In doing so, you can determine if you are training hard enough or perhaps overtraining. If you choose to buy a power meter, you have a couple of choices. You can go full blown out and buy the SRM Powermeter Crankset or buy an affordable powermeter offered by Powertap.