Not an issue at all. I'm NOT as strong with IR as I am with Crestron, but the few times I've used IR repeaters I haven't had a problem. I freely admit that I am not 100% sure of all the pitfalls that may be involved in an IR repeater system. I just know that I haven't personally run into them myself in my (very) limited use of them.
Crestron is an interesting ball of wax. It does cost more, but the reliability level is exponential. Things like properly turning equipment on and off when it is not in use so it doesn't run all the time or require manual use to power it on/off. Ability to expand and adapt to an ever changing system. Ability to grow well beyond some limited setups.
Their ML-500 remote is the MX-750 remote rebadged. Then there are lesser expensive processors that it pairs with to give it full RF capability. Reliable up to about half a block away. Pricier? Yes! But, the reason it is used and is a $30M annual company is because it works - always. Plus, they have a great warranty and service policy.
But - as I said - that would be if the user wanted to really take things to the next level which is not clearly indicated in the post. Some people say 'central location' and what they want is one DVD player, video switching capabilities, a central 400 disc DVD changer to go out to every room, a few other TVs thrown into the mix (maybe), and perhaps half a dozen additional rooms with audio.
Then, Crestron is a very adaptive solution that fits nicer than any other product out there. At a bit of a premium.
Dealers are required to be TRAINED on Crestron??? There's a concept.
I know for a fact that when I worked for an area chain that sold Crestron while I knew about it, 90% of our sales staff who was supposed to sell it, had NO clue how it worked or what was involved in a solid Crestron setup. Crestron is not easy to install. It is easy for the end user to use. So, dealers must know how it works. I think that says something good about Crestron right there. Helping to protect customers.
I have never given a red chicklet and won't start now. Just cuz' someone disagrees with me - and gives very valid reasoning.