SS15 or a different home for my 3015LF?

Retired wedding DJ here. I sold my main system, EV Tour X 12" tops and 18" subs but kept my powered EV Live X ELX112P speakers for small events here and there. I don't use them frequently, but when I do I would like to fill in the low end with a sub(s). Along came the Parts Express catalog a few months ago, the DIY speaker builder edition, and I got the itch to build a sub. I've never built a speaker before and it sounds like fun.

I got all excited reading through the very lengthy Single sheet TH challenge thread and placed an order for an Eminence 3015LF witht the intent to build the JBell SS15. I got in on the 10% off sale at Loudspeakers Plus, although I would have rather paid 2010-2011 prices that were listed early in the thread! I have the plywood and am ready to start sawing, but I recently found this thread talking about a T-TQWP design:

I like the form factor of the T-TQWP. I think my EV's would sit on the top nicely like Dons Peaveys in his post #36. I also like that the box looks easier to build. I am not an expert wood worker by any means, but I do have the appropriate tools and I don't think I would have any trouble with the SS15, but the easier the better for my first build.

I see that the T-TQWP will play lower at the expense of losing 3dB. Don mentions in post #36 that it was a high price to pay for the lower frequency response. Maximum output isnt my main goal, but of course I do want all I can get out of it just in case I end up in a place where I need it. My questions is, will I feel cheated on output by going with the T-TQWP design? I would be mostly playing country, rock and pop music for small wedding receptions and other random, small, indoor events. Mostly at moderate levels, but would like the ability to get loud if the gig calls for it.

Which one would you choose?