It does have a graphical method for trimming samples. The difficulty is - that there is only 57 seconds of sampling.

I traded in my SU10 for a Roland SP202. I edit all my samples using PowerTracks Pro-Audio to manipulate and create my loops. I trigger sample them into the SP202.

I use the SmartMedia 4MB sounds to give me 4 minutes of sampling time - and I have 5 of these cards that I can use while I'm performing.