need pre amp suggestion

The mapletree stuff looks really interesting, especially at the price points. It looks very well built, does that hold true in reality?

YES!! Give Dr. Peppard (great fellow) a call to discuss your equipment and needs. He will optimally customize each input gain for you (who else does THAT?).
I've had mine for >2 years and no issues at all. Still love it! No desire to replace it at all (and it's the least expensive piece in my whole system).

This will sound stupid but what does a customized input gain do for the sound? Secondly, how do I know what to tell him.

If I were you I would stick with a McIntosh pre to go with the amp. Best match. The 28 seems pretty ancient but you should be able to find a more up to date model used.

As an aside, if those Gallo's are coming in new make sure you follow the manufacturer's break-in guidelines religiously. If you do you will be very happy with them.

Gsxr750ccs - Many factory preamps have too much gain. Its best to be able to set your volume control at half-turn for the volume you normally listen. Mid-way is generally the most linear position. Also, yuo'll have more volume selection when the gain is not so high, allowing for more gradations. You don't need to know what to ask for. Discuss with Dr. Peppard and he will offer an optimal solution. Don't be askeered. He offers a trial period. He's great and very patient and helpful. Give him a call or e-mail.

There is a VTL 2.5 listed for less than $1000,it is a very musical unit. VTL has a wonderful sound.
Good luck in your search
Jeff