I have one along with several D55IRs. It is a reasonable camera. Every brand has good and bad models. I had about 4 I-40s that all had their displays crap out. They all crapped out right after the warranty ended, which sucked. I have had good and bad Stealth cams as well along with a couple other brands.
The I-35 seems to be an earlier version of the newer series closer to the D55IR than the I40. I have had mine for well over 2 years and it is doing well.