RC's 7K:
On the first few seconds, I would never recommend anyone to try to use slider ends to represent some sound... But if you know what you are doing, that's fine...
and 00:05:850 (5850|5) - , I didn't find any sound that this note is representing ( I think the beats should be like ooo_ooo_ooo_ooooooo_ooo...) So you may consider remove this note.
Actually my suggestion is to remove most circles before 00:12:810 (12810|2) - only leave a few at 1/1s (whte line) and rearrange these holds...
00:46:170 (46170|0,46410|1) - I recommend letting these 2 sliders end at the same time and add another slider ( I heard 3 vocal words "you make it(?)" )
Slider pattern placement is better in later parts of the song than in earlier ones. You may check your first few seconds and make enhancement
7K HD
00:14:970 (14970|4) - This jackhammer is strange, it looks like 00:14:730 (14730|3,14970|4) - this two should form one jackhammer. You may move this note to some other locations and rearrange this part.
00:26:970 (26970|4) - A hold should be enough, consider remove this note.
00:56:490 (56490|0,56730|1) - i'm not sure what you are doing here.
if you are mapping vocals, consider combine this two notes to one ( and a later part too);
if you are mapping instrumentals, consider adding 3 1/2 sliders after 00:58:170 (58170|1) - .
01:14:730 (74730|1) - remove this one or add some more notes at similar parts. (Some are 3-chords like this one, some are 2.They are nearly half to half) You may need a rearrangement.
01:24:090 (84090|4) - After here some hold just seems a little randomly put. I know that you are mapping something, but this may be caused by inconsistency (you map ooo 1 circle, 1 hold and 1 circle) - You may check it further.
These two are not bad, but are not excellent. Go on! I look forward to see these two getting better