Add a lot of X10 or Insteon to a big installation?

[Mitch <sumcoolgai@xxxxxxxxx>]

I have about 50-60 X10 modules (a lot are smarthome, some are Leviton)
in my house and have added an addition.  I'll need to add another 50
or so with about 20 of them being relays for fluorescent lights.

I've considered using Insteon for the new areas of the house.  But,
I'm concerned that the signal suck from 50 Insteon devices will kill
my X10 reliability (even though I have an XTB-IIR).

One issue with using X10 is that Leviton non-dimming switches
(HCS10-1SW) are EXPENSIVE (relative to Insteon non-dimmers. )

I did find some decent pricing on some PCS switches (RS115) -- anyone
have an opinion on these switches?

So... what would you suggest?

- Stick with X10 and use PCS switches
- Stick with X10 and buy the leviton switches even though they're
expensive
- Go with Insteon for the new stuff (all -- dimming and non-dimming)
- Go with Insteon for just the non-dimming switches

Thanks for your help!

Mitch