I have a pair of the TCX infinity boots and also have the Daytona's from HG so can make a comparison.
TCX's I paid £165 after a little negotiation at the bike show and they are much more substantial than the Daytona's - feel solid, better padding, higher shin protection, thicker leather etc, and the sole is a thicker than the Daytona which can matter if your seat height is marginal. They are more fiddly getting on / off though. The sizes vary a lot as well, I had to try 5 pairs in the same size before I found a good fit.
The Daytona's I got direct from HG on ebay, they were being re-sold as a customer return (someone returned saying they were leaking). I can see how these could leak if not worn properly but to be honest I have worn them in the rain for 1 1/2 long run with no issues at all. Just to make you sick, I paid £21 (used-returned) direct from HG and were one of the best bargains I have ever had. They don't come that high on the shin and need to be worn inside your trousers to keep them waterproof (no seal) so make sure your trousers don't ride up too high otherwise you will get wet feet first shower! They are light and comfortable but as I say I don't think they are as substantial as the TCX's. They are quite large as well for the size, but some inner soles cured that !
Personally I tend to wear the Daytona's for short runs / summer / with leathers. The TCX's I wear more in winter / with textiles / for longer journeys.
Overall if you are paying full price I would say TCX's are much better value over all as they are more substantial and cheaper. The Daytonas are light easy and comfortable though, so depends on priorities.
Hope that helps !!