Ah Yes
I remember the first compressor I ever bought back in '96. It was an original dbx 266. Damn how I've NEVER been able to get what I got out of the drums with that thing! Don't have ANY idea how the hell I did what I did to get that, but I didn't know how to use that thing! I used my ears to set it... What a concept, I know...
Saddly, after I recorded and mixed (actually, that was the band) my band's first album, it quickly became apparent that I needed A LOT of compressors for drums. And I mean QUICK! So, I got rid of the 266 (don't even remember what the hell I did with it) and plopped 800 good ones for a brand new Presonus ACP-8 that was just released that year. Never was able to get results with that thing for quite a long time! Still have that bad boy though! Oddly enough, I JUST recently learned how to tame that puppy! Been going to it when all else fails on the last 2 "just for fun" songs that got laid-down. Sure won't be afraid to use it in a real mix anymore!
Anyhow, the point is, you take what ya got and MAKE it sound good to the best of your ability!
Personally, I'd hold-on to that $70 for a bit and try and add $100 to that over just a bit of extra time. That'd be nearly enough to buy you an FMR RNC; a compressor you'll keep for years to come, no matter what you buy in the future, regardless of quality or cost.
Or you just snap that 3630 right up, only to simply turn right back around and sell it because you'll probably find you like your Tascam compressor better!
Plus, who knows... Maybe it'd be worth the 70 bucks to find-out for yourself if the 3630 worth a shit or not to you. Who know...