In 7MC, it is possible to skip forward or back by a certain number of minutes. Just type in the number of minutes and seconds to skip and hit RW or FF. For example, to jump 5 minutes forward, enter 5 0 0 FF. This is close to what Replay offers except you have to enter number of seconds. I would prefer to not have to enter the seconds and just skip in number of minutes...less to enter that way.
I recently got 7MC to phase out my two RTV 50XXs. So far I am liking it a lot. I don't have a cable card tuner yet, so I can only record analog and clear QAM cable channels. It's very nice to be able to set two things to record at once without having to browse over to my other Replay.
I'm using an XBox 360 to extend 7MC to my TV. It's pretty good although you can't do everything such as watch programs in 1.5x speed.
I'm using ShowAnalyzer to automatically skip commercials like on my Replays. It's pretty good though doesn't quite seem as good as Replay. I haven't tweaked the settings yet which may improve things.
I'd say there are two main things that I miss from Replay that don't seem to exist in 7MC. First there is no way to organize your recorded shows. On Replay, we have categories that are used to organize shows. No such thing in 7MC...you only get one big list of all shows which you can order by date recorded, title, or original air date. If you order by title, it does group multiple instances of the same show into a single item on the main list. This is very bad if you have a lot of series recordings. For example, on Replay I can set up a category for my kids and set it to record every Spongebob. On Replay, I never even have to see those recordings unless I browse to that category. On 7MC, I'll have Spongebob scattered everywhere in my recorded shows list unless I sort by title.
The other main thing I miss is the Jump button on the Replay remote. I always used it to swap between two shows. In 7MC, if you want to swap, you'll have to search through your recorded show list to find that last thing you were watching again.
Another thing is you can't pre-pad series recordings for some reason, so I have some shows where the beginning gets cut off.
Also miss the Replay Photo screensaver. 7MC has a great slide show viewer, but there is no way to do a photo screen saver if you've paused a show while watching on the 360. There is this ability if you are watching on the PC though, I believe.
Overall, I am pleased though. Once I get my cablecard tuner, I'll be able to record 6 shows at once which beats the two my two Replays could do.