I've got one of the wilson mobile boosters and it's amazing the difference it makes. I paid around $250 for the kit, so it's not cheap but where I live cell towers are spread way apart. I have one stretch of road where I drive to work each day that's about 30 miles long where without the booster I have no signal at all, and with the booster I can make a call and keep it with minimal chance of dropping it. Internet on the other hand is a little touchy. Keep in mind I'm boosting from no signal to two to three bars. As far as dbm goes it boosts it at least 30db. I can go from having no signal (-120dbm to having -89dbm in a "no signal" area. In areas with strong reception the booster will literally boost my signal to -19dbm. I've never seen a signal that strong. Only downside is if the signal is extremely weak you literally have to have your phone on top of the inside antenna to work, but it's better than nothing. I've got a setup at my camp for in home that is rated for a 65db boost versus the 35db boost of the mobile version. I'm 30 miles away from the nearest tower in that case and it boosts it from no signal (-120) to around -75dbm. That kit was $600. I rather invest the money in the wilson than get one of those verizon branded "extenders" that offload their issue onto your broadband connection. I rather pay and at least use the tower i'm paying for.
Anyway, for anyone who doubts the wilson system I can definitely say it works.
I got the 801212 mobile kit for my car
as far as the in home solution I got the 801245 amp a 800mhz and 1900mhz yagi antenna and a directional panel antenna for inside. I also used the ultra 400 cable for less loss.
repeaterstore is a great site to research options available. If you look around though you can find cheaper dealers.
Hopefully this helps. Hoping to add a little back to the community.
Also a great app for monitoring your signal and breaking it down into 1x and evdo signal strengths is "real signal" in the market. Awesome app, especially if you want to see the difference in signal between the evdo and 1x signal. Apparently the Incredible only reads the 1x signal dbm and displays that as the dbm rating, so you don't have any idea what the evdo signal is.