I have Tekton double impacts and impact monitors. Got the double impacts used and they crushed my existing speakers so much that I wanted to get the monitors as well. Took a while to get but was expected,like 8 weeks after they initially said 6. I ordered speaker cables and it took them months to send them after multiple promises to receive them. They're a small company and I don't think they have enough employees it seems for customer service stuff. They did send an extra pair of cables and apologized profusely, which is really nice I have to say. I've since replaced those cables with better ones but they're nice as backups.
To end my rant, I was going to buy subs but after the months of waiting on the wires and being told they'd ship immediately, I was a little soured on them for my subs and went with rhythmiks instead, which I HIGHLY recommend for subs. Would love to hear a pair of 4-10s or 6-10s but felt I'd get a smoother experience with rhythmik. For what it's worth, with my tektons tops and rhythmik bottoms, I'm at +/-3 DB frequency response from 25 hz to 20 khz at my listening position with limited room EQ. Tekton has a pair of 4-10s on their specials for $1700. Definitely tempting... but I do love my rhythmiks