I don't have any experience with suits that have liners so take what I have to say with a grain of salt or completely disregard it
your choice. When I first started going to the track I only had one suit and one set of under armor. After discussing the one suit thing with other riders they convinced me to double up on everything. So now I have 2 suits and 2 sets of under armor. Never needed them from sweating but they sure were nice the couple of days it rained at the track.
The first time I used the second suit it rained all day on Saturday and soaked my primary suit and under armor. It wasn't dry by Sunday morning despite using a dryer but it didn't matter since I had a complete dry suit ready to go. The second time was a similar situation.
It would be nice to peel off a sweaty suit at lunch and put on nice dry one for the afternoon sessions. That was my original plan but I just don't have time to ride in the summer. My next investment is a GOOD hang dryer, like the one listed above.
I hope that helps.