had a PE tracker for a number of months before finding an m8 on the used market. sold the PE tracker right after i found the m8.
the tracker was fun and I enjoyed using it. i got frustrated with the jog wheel quirks on my unit and ended up only using the arrow keys (funny enough, more like the m8). i found the limited FX lanes and ultra basic synths to be lame and primarily used it to trigger one shot samples. also got tired of endlessly gainstaging to avoid clicks and crackles. i enjoyed the tunes i made on it, but it felt kinda pointless to be using it when most of the features i originally found interesting were served lukewarm.
the m8 kicks ass all around and i am never missing anything while using it. maaaybe sometimes i wish i had the smallest external midi controller but now that im experimenting with using the S1 for that i cant think of anything else