Which do you like the best and why
LOL, that's a tough one Tim. Each one has SOMETHING special about it that makes each one different and special.
Sorry, I had hoped to keep this short, but I blew that again...
The one that gets the MOST play time is the
Millennium Standard.
It just sits so nice in the mix, it's my everyday player. Lots of tones and very comfortable to play, light too. Great overall bass.
My
Mill Plus while stunning to look at, for some reason just isn't as comfortable to play as my Standard. I have yet to do the business card trick, perhaps that's the reason? IDK.
The
Dyna bolt on is PROBABLY the most practical and my favorite. I love the fact I can switch to either fully active or fully passive. If the battery dies, just flip the switch and keep playing. Something I wish ALL the active Peavey basses had. The neck (as you know) is just amazing, with all the tones I need. Light and comfortable, perfect for those super long sessions. It needs a good deal of work currently so it doesn't get the use it once did, but I will NEVER part with it. Truly the most underrated bass I've ever played.
The
TL-5 is the sexy model as far as looks, feel and power. I still struggle with five string basses, but it is and probably will be my one and only 5er. A joy to look at, the lowest action of any of my basses, and it just shakes the walls of a 2900 seat church. I love this thing more than my Alembic Essence 5er. Just as purdy, for the price equal to the sales tax on the Alembic. NOT that I don't like Alembics, but no need with this bass around.
The
T-40 while it doesn't voice as well as the others, I love playing this bass. I use it most when we play slow ballad type songs. Fun to play, lots of tone, just not as "bell" like as the other active Peavey basses. It has a SUPER comfortable neck on this one too....as Scott well knows.
The
Foundation is a bass that is my go to passive bass when I'm not sure which bass to bring. Great neck, great tone, amazing sustain (it's an 80's version). Jazz bass feel and tone with a kick. Could use it anywhere, but when I'm in the large buildings, I NEED the active power to compete with all the horns so I usually use it in the smaller venues.
The
Dyna UNITY is VERY SEXY and reminds me of my Alembic days as well. I don't use this one as much as I'd like to. The neck is a bit thicker. My only complaint about this bass is the output compared to the other active Peavey's. I just get lost in the mix playing this bass. ONE day, I'll do something to improve it, although I don't know exactly what. POSSIBLY Alembic pickups or pre, but....I'm not in a rush. Also, the volume only comes alive in the last 1/4 turn of the volume knob.
Not to forget the
B-Quad. Tim was trying to sell me on this bass for a long time. I hated the look, wasn't thrilled about the composite neck, and hated the thought of spending over 1K on a bass I couldn't try before buying. But he was so right. It was a leap of faith that I'm glad I took.
Since I bought a few basses from Tim, he had a good idea what I would like. A TON of tones can be produced from this bass, the neck is actually very comfortable, and I like the Piezo option. I'm not sure how to say this, but it responds better than most basses. I use a lot of dynamics with my hands when I play, and it picks up every nuance. Light taps, gentle vibrato, etc comes through loud and clear. It makes you very aware of every move you make on that neck. It is a solid feeling bass, and feels heavier than most of my bases, T-40 excluded.
It needs a volume pot BADLY, I can't use it live until I can get that fixed, so I don't have the play time on it as I do the others I own. I'm pretty sure it will be my new go to bass, but I can't even touch that volume knob without it totally cutting in and out....LOTS of pop sounds. It's a great bass, well thought out, and really put together well.
SO, that should be clear as mud.

Each one is dynamic and unique. Some have more clarity of tone, some feel better, some are amazingly powerful.
I have YET to try a Cirrus bass, and IF I have the winning lottery numbers in my hands, I'd love to find one of those purple heart looking Sarzo basses. I'm not a single pickup kind of guy, I had a T-45 and it never did anything for me. I have been temped with the Fury and Patriot basses, but I have more than I need now, I can't justify getting any more at this point.
I've come full circle. I had $189.00 basses, all the way up to multiple thousand of dollar basses, back to a $200.00 Foundation upwards the Peavey line. I was a gear snob, but have since seen the error of my ways. I have been pleasantly humbled by these basses.
Thanks to all who made it this far....
Tony